The Anatomy of Nose Breathing

1 Comment / Anatomy, breathing, health, Respiratory System, yoga, yoga benefits

Why is Nose Breathing Important?

Nose breathing is the most essential part of yoga. It is also poorly understood in modern culture. Breathing through the nose is physiologically much different than breathing through the mouth; there is far more space in your nasal cavity than in your mouth to start. There is also a filtration system in the nose that doesn’t exist in the throat. You can see this on the right; the tongue takes up the vast majority of the space in the mouth and the nasal passageway is very small at certain points. The mouth actually makes for a more narrow and less effective breathing passageway, especially when you consider the benefits of the pressure system that exists in the nasal cavity. Your body craves breathing through the nose, especially while you sleep! Human breaths are more powerful through the nose.

There are studies that have shown all kinds of benefits of breathing through the nose; it is even considered the proper method for breathing by the scientific community. “[Nose breathing] increases circulation, blood oxygen and carbon dioxide levels, slows the breathing rate and improves overall lung volumes ” Swift, Campbell, McKown 1988 Oronasal obstruction, lung volumes, and arterial oxygenation.

Breathing through the nostrils has also been proven to improve brain function; opposite nostril breathing stimulates the opposite hemisphere of cortex and the nervous passageways in the cortex (ie left nostril breathing is associated with stimulating right brain activity).

There is also significant research being done on the relationship between the prefrontal cortex and the passageways to the lungs. It is being shown that there are major correlations between ADHD and sleep disorders and breathing habitually through the mouth. Information beyond the clinical applications for sleep apnea where hard to find; obviously the health need ($$) for assistance with sleep apnea is somewhat sizable, therefore there is more research done around it. However, it has been proven that alternate nostril breathing affects the brain’s physiology; there are some extremely close relationships between specific portions of the brain and the respiratory pathways, especially in the hindbrain (medulla and pons).

There is an ever-increasing body of research on the relationship between sleep apnea, asthma, and on the negative effects of breathing habitually through the mouth. Nose breathing is more protective and efficient at fueling the human body’s need for oxygen; however, the passageway is relatively easily obstructed. The mouth has been shown to be more efficient at releasing carbon dioxide quickly than the nose, although exhaling through the nose has notable benefits for the mucus membrane and cilia of the nose. Let’s explore how the nose is a powerful filtration system for the lungs.

Filtration Systems

When I was 25 I visited Beijing with some of my friends from the time that I studied abroad in Paris. While I was there, I noticed myself continually nose breathing due to the large particles in the air. I was fairly deep into my yoga practice so I was used to breathing through my nose for long periods of time, but I instinctively understood that breathing through my nose would help to filter the air and keep the large bronchitis and cancer causing particles out of my trachea and mouth.

“The nose serves as the only means of bringing warm humidified air into the lungs. It is the primary organ nose breathing for filtering out particles in inspired air, and it also serves to provide first-line immunological defense by bringing inspired air in contact with mucous-coated membranes that contain immunoglobulin A (IgA).”

The nose assists in stimulating the immune system. The changes in pressure stimulate the physiological processes associated with the maintenance of the mucus membrane and help to retain oxygen in the lungs. It also provides humidity and heat for the air entering the lungs, as well as increased filtration from the cilia and small hairs that line the nose. In the picture above, you can see the olfactory(smell) nerves and the organization of blood vessels within the nasal cavity. Overall, it is a good idea to concentrate on breathing through the nose, whether sleeping, awake, or even during milder forms of exercise.

Why is this important for yoga?

This information helps to explain a large portion of why yoga is so beneficial for the body. Breathing intensively through the nose for one to two hours creates space for the habit of constantly breathing through the nose. This is probably the biggest reason that in clinical studies, sleep quality of subjects who practice yoga is higher. Breathing’s relationship to the functioning of the brain is also interesting; some studies have shown that yawning helps to cool the brain, but the act of yawning is probably far more complex than that simple generalization.

Questions?

How does nasal breathing affect the hippocampus and memory?

How does nose breathing affect the hypothalamus and the regulation of your emotions through the endocrine system?

What parts of the brain does yawning cool?

What portions of the cortex received the greatest benefit from breathing through the nose? How about the mouth?

These questions, at least as far as I can tell, science has yet to answer. But we do have clinical evidence that yoga positively affects mood disorders, PTSD, anxiety, depression, and there are a lot of very positive findings between yoga and cardiovascular health, while simply nasal breathing is proven to positively affect the heart and lung tissue. It is probably just a matter of time before we discover more of the benefits of yoga and of nose breathing.

Don’t be a mouth breather! 🙂

References:

http://emedicine.medscape.com/article/874771-overview
http://onlinelibrary.wiley.com/store/10.1111/j.1398-9995.1999.tb04402.x/asset/j.1398-9995.1999.tb04402.x.pdf;jsessionid=AECDFA5F44190494D5E7B315E7A6FEB2.f01t03?v=1&t=ilmeorkg&s=c4bc17315db2cd2d969feca8ad933515fa409e02&systemMessage=Wiley+Online+Library+will+be+unavailable+for+up+to+3+hours+on+Saturday+19th+March+2016+from++11%3A00-14%3A00+GMT+%2F+07%3A00-10%3A00+EDT+%2F+19%3A00-22%3A00+SGT+for+essential+maintenance.++Apologies+for+the+inconvenience.
http://care.american-rhinologic.org/nasal_physiology
http://medind.nic.in/iad/t05/i4/iadt05i4p251.pdf
http://www.ncbi.nlm.nih.gov/pubmed/8063359
http://journals.lww.com/neuroreport/toc/2013/12040
http://online.liebertpub.com/doi/abs/10.1089/acm.2005.11.711

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Vegetable Protein Sources for the Average Vegetarian

Leave a Comment / Digestive System, health, nutrition, protein

Vegetable Protein Sources

Vegetable protein isn’t hard to find. In fact, it’s probably already in your house, disguised. I am a pescetarian. I am not a vegan, but I was once. I stopped because it was too hard to stay healthy without eating tons of sugar and it was very difficult to avoid eggs and dairy products (especially goat cheese, that stuff is amazing).

It is extremely hard to be vegetarian in the United States. The system is literally working against the health of the American people; beef companies get huge subsidies, as do dairy farms and monoculture crops are the norm. This is the opposite of biodiversity, which is necessary for health gut bacteria (see the human body is an ecosystem part 4). I won’t even mention that animal agriculture is the cause of over 50% of the planet’s greenhouse gas emissions. I call myself a vegetarian, which isn’t wrong because pescetarianism is a branch of vegetarianism.

Let get to the good stuff; if we don’t eat meat, then where does our protein come from? The answer is vegetables. Consider for a moment that a 350 Lbs low-land gorilla eats almost exclusively leafy greens.

But what vegetables? Here the top 10 from most concentrated to least concentrated:

Lentils & peas – eat lots of these, if you don’t already
Soybeans – you probably already eat a lot of this
Lima beans & corn – you probably eat a lot of this too…
Kale – cook it to change the nutrient quality
Broccoli – see above, can give you energy if you feel down (lots of B vitamins)
Mushrooms – aren’t they great?
Artichokes – yup
Spinach – Popeye, duh
Parsley – I exclusively drink this one…
Potatoes & Carrots – always great!

Da fuq? All of the veggies have tons of protein. Is vegetable protein healthier? Why do I feel like I need meat?

Your body habituates itself to eating meat when it becomes a normal part of the day. After my first week of being vegetarian (at 24, after eating meat daily until that point…) I felt like I had to go back to eating meat and did. After a couple of weeks of eating meat, I realized that I didn’t like it as much and went back to vegetarianism and eventually hardcore veganism. Now I eat fish when its available and a little chicken here and there (probably once a month).

There is a very popular cultural myth in the United States that you need meat as a protein source. This is one of the health tragedies currently plaguing us, as hamburgers are cheaper than salads. For someone trying to be healthy, it really sucks. Besides, where do those enormous cows get all of their protein to grow far larger than humans? It’s in the vegetable protein. Grass. But if you are really serious about losing weight, you’ll do what I did. I didn’t eat sugar for about six months.

You’ll never see it advertised, but if you really want to lose weight, stop eating sugar and drink more water. It’s that simple. Don’t even worry about protein. I’m speaking from my personal experience in a world that will do anything to make you think you need more food to be healthy. If you’re American, less is probably best. And no, I’m not talking to any girls out there with anorexia. You should be trying to eat early in the morning to maintain healthy metabolism. Try salad for breakfast. Dieting is far more important that exercise for weight loss, especially once you are in good physical shape. Trust me, I’ve been fat and in amazing shape. There is a lot of truth to the myth that abs are made in the kitchen. The only part that’s a myth is that you need to do ridiculous amounts of abdominal exercises to have your abdominal muscles be visible. Or just do yoga twice a day for 3 months and weight lift a few times a week.

Limiting your meat consumption could be the healthiest thing you can do for your body today. The second could be a yoga class 😉

Another excellent source of protein that I didn’t mention is quinoa. I love the stuff and its full of protein, but it’s not a vegetable protein so it isn’t on the list. Stick to leafy greens and remember how much protein lowland gorillas get from eating leaves all day long.

Sources:

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Yoga's Primary Benefits_autonomic_nervous_sytstem

Yoga’s Primary Benefits: Control of the Autonomic Nervous System

Leave a Comment / Anatomy, health, Science, yoga, yoga benefits, yoga practice

Yoga’s Primary Benefits

Honestly, yoga’s primary benefits are still unknown. Our science isn’t good enough yet. Not really. Science is just starting to catch up to the power of some of the world’s most ancient healing traditions and are learning their meaning in a whole new light. Yoga’s primary benefit is certainly related to the functioning of the central and peripheral nervous systems, but how is something that has yet to be explained. The Ujjayi breathing technique, or breathing slowly through the nose is almost certainly related to yoga’s primary benefits; how is something that we have yet to learn. The Western world is slowly learning that the Eastern traditions, medicines, healing techniques, and ritualistic traditions are grounded in some serious observational science, even if it isn’t quantifiable and measurable by current methodologies and technologies. Even if the causes aren’t completely explained. This is happening in Acupuncture, herbology, nutrition, Ayurveda, and even Yoga is one particular field where we are learning a lot about how beneficial something as simple as breath control can be. The human body is more complex than we can currently understand; we are continually learning more about the human ecosystem that is what we define as our body.

Yoga is one particular tradition that reaches very far back in civilization, but our scientific knowledge about how yoga can help the body to heal is fairly rudimentary. We know from clinical studies that yoga helps with sleep duration and quality of sleep, we also know that it helps with anxiety, depression, and stress. But yoga in our modern society mostly means exercise, something that is vastly under-rated in American culture and in our society; 66% of Americans are overweight.

Yoga almost certainly has benefits to the endocrine system, the respiratory system, the circulatory system, the heart, and the digestive system, but many of these benefits have yet to be measured. Even our understanding of the functioning of the respiratory system is still somewhat archaic, especially in terms of the lungs interacting with the heart, especially in the paradigm of disease. We have a lot to learn, but another, even more powerful benefit that we are learning about is the control one gains over the nervous system.

Yoga and the Nervous System

The nervous system is the central source of energy for your body; the electricity in your body is the fundamental source of energy for your body and therefore your consciousness to exist. The electricity that runs down your spine and into your peripheral nervous system, or the legs, torso, arms, organs, and every other part of your body is a continually firing process that continues from before birth and ends with our final breath. This is what allows us to be alive and is the fuel for our internal fire, passion, love, and existence.

This nervous system that we have evolved into over billions of years is extremely adaptive; different aspects of it have partitioned and specialized; we have a parasympathetic part of the autonomic nervous system and a sympathetic part; a conscious part of the nervous system and an unconscious part of the nervous system.

Yoga and Stress Regulation

The parasympathetic autonomic system is largely outside of conscious control and regulates most of the “background activities” of the body, such as digestion, sexual activity and arousal, urination, etc. The sympathetic nervous system allows us to control our fight or flight response or panic responses. Yoga allows us to tap into both of these systems and influence their activities and awareness breeds control, making awareness of the proprioception of the nervous system a primary benefit as well. That’s why balancing in yoga is such an important part of the practice.

One of yoga’s greatest benefits that is also a byproduct of meditation is alleviation of tension from the muscles, cortisol from the bloodstream (stress hormone), and slowing down of the heart and therefore circulatory system. Control over the nervous system helps us to do this because it allows everything else to slow down as a result of slowing the mind, and allowing the body to reach equilibrium and decompress. This can help us to fully relax in preparation for strenuous activity and the two can balance each other out really nicely because of yoga’s benefit to slowing the nervous systems.

I’ve done yoga in airports, on airplane bathrooms, in buses, in random hotel rooms, in airplanes, in cars, in RV’s, while camping, after long days of strenuous activity, etc and I will always use it to keep my circulatory system “feeling good” while traveling. The benefits of yoga for the body are undeniable and we are just starting to learn about the real consequences of this powerful, healthy, spiritual, and enlightening practice.

sources:

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Adjusting Ashtanga

Leave a Comment / Anatomy, asana, Ashtanga, health, India, journal, Pattabhi Jois, philosophy, yoga teaching

I am a huge fan of the Ashtanga practice. The intensity, the discipline, the mindlessness, and the routine of the sequential practice makes it like a second home for me. I always know that there are mornings where I can wake up and work without thinking, push myself without thinking of how, breathing without having to plan for a destination. But there are some problems with practicing the Ashtanga practice exclusively.

The Ashtanga series were a prescription for Krishnamacharya’s Indian students, namely his most famous student Pattabhi Jois. Krishnamacharya made them specifically for 15-year-old Indian men that were training for hours each day and that didn’t have previous injuries, or probably a lot of other sports and exercise experience.

This means that Krishnamacharya had a specific purpose in creating this sequences for young and fit Indian men and that the sequence is optimized for the Indian skeleton and definitely not for the other types of human skeletons. This becomes especially apparent when westerners begin trying lotus pose, Kukkutasana, and the Marichyasanas.

So there comes a point when one starts to realize that certain poses simply aren’t good for their body. This is half-bound lotus pose for me. The reason is that my knees are simply not strong enough to stretch my hips as deeply as the stretch requires, even though my hips are very open and I have good alignment. At a certain point, we have to realize that the body is mechanical; it has very real limitations that you will sooner or later be coming into increased contact with.

In my first two weeks, I was injured in the Ashtanga sequence. Marichyasana B, I can remember the stress of feeling injured like it was yesterday, my lateral collateral ligament snapped and I heard a very audible pop while I was in the full pose with the bind. I quickly got out of the pose and finished my sequence, then went home to look up some rehab exercises for my knee. It took a couple of days of exercises and taking it easy to let my knee heal. Not a fun few days while I was healing.

I continued my full practice for the rest of the time in India, making adjustments and skipping poses when it felt right. I did some extra work to make sure my knee was stable and working properly and avoided walking too much to make sure that the joint was getting less stress. Slowly full lotus opened up for me while I was rehabilitating my knee, though there is still quite a bit of space left to create in my hips. The injury forced me to be more conscious of what I was doing, to not accept things as they were explained, in black and white.

What is the point of that story? Every body is unique, so how can one series work for everyone’s skeleton? It can’t.

I think that there are parts of the Ashtanga sequence that are almost perfect in their ideal succession, mainly the standing series of the primary series. There is something especially cleansing about doing the poses in that order, and the inversions at the end are simply magical.

Sunday, I taught my first class back in the states. It was great, it was easy to forget how much I love teaching yoga until I was in the room again with all the wheels turning. It was a hybrid style so we warmed up slowly, with a bit of flow including some low lunges complete with back-bends, and even an extended child’s pose. Then we moved into standing postures and the full Sun Salutation B sequence, holding warrior 1 for less and less time and getting into the full back-bend in upward dog. Then we moved into the entirety of the Ashtanga practice. Instead of doing floor stretches, we did a bunch of ab work and then moved into some final yin-type stretches. I loved teaching the sequence and it felt right for the class; music was slow and complimentary more than anything else.

So if you come to my classes, except a little flair of Ashtanga. It’s evolving into something pretty cool and I think that someday soon I might help to develop a new series based on the Primary Series. It’s all an evolution 🙂

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The Human Body is an Ecosystem (Part 4/5 : Gastro-Intestinal Micro-Organisms)

1 Comment / Anatomy, Digestive System, health, Organ Systems, Science

Part 4: Micro Organisms of the Gut

Please see the other parts of the article; once they are completed the links will be active:

Part 1: anatomy of the human microbiome
Part 2: micro-organisms on the skin
Part 3: micro-organisms in the mouth
Part 5: implications for modern medicine

The increased knowledge of gut bacteria is a an excellent example of a paradigm shift in the health community. The scientific community has obtained an incredible amount of knowledge from this new field of microbiology. The gut flora is sometimes considered an organ because of its importance, this community of micro-organisms is evidenced to protect its host (that’s us) from pathogens and allow us to extract nutrients from our diet.

Your colon contains over 100 trillion micro-organisms most of which are bacteria. It also has the most complex and intricate interactions of the human micro-biome. The flora in the stomach and upper intestine are not as diverse or populous. This “gut” ecosystem is complex with over 400 species (identified genomes) but not quite as numerous as the 1,000 different genomes of skin micro-organisms. This is probably because of the skin’s increased interaction with the environment.

Bacteria populations within the gastrointestinal tract differ greatly depending on the host: geographical location, diet, genetics, even the behaviors of different species are vastly different based on the history of the host. Not surprisingly, diet is probably the largest factor in the populations of bacteria in the gut.

These bacteria have lots of different functions: synthesizing vitamin B and K, nutrient extraction, metabolizing bile acids, sterols, and xenobiotics, defense against pathogens, cell growth stimulation, and response to disease. They are often referred to as the forgotten organ because of the immense role they play in digestion and little attention they have received until more recently.

Gut flora evolve during the course of an individual’s life. These microbiota are non-existent until birth, and mature at the age of 3. Micro-biota are normally associated with nutrient intake, and concentration of communities are indicative of the type of diet of the host. This ecosystem, or microbiome in the gut is essentially your metabolism and what allows your body to breakdown and re-intake nutrients from your food sources. They believe this may be a reason why breastfeeding is important for infants; the nutrients help to form the initial microbiome of the child.

Without these bacterial cells, our bodies wouldn’t be able to breakdown certain nutrients. They also help the gut to maintain efficiency, especially in the colon. The colon has a lower pH level than the rest of the body, preventing harmful bacteria from proliferating and possibly even enhancing the excretion of carcinogens (cancer causing agents).

Gut bacteria have a primary role in nutrient absorption, especially electrolytes, and help the body to control its fat levels. They also help to fight allergens including over-action of the immune system. Some bacteria can even stop inflammation during the digestive process. Some genus’ of bacteria aid cancer growth, while some fight it. There is increasing evidence to suggest that obesity might be caused by bacteria populations and that the two could be intricately related.

The populations of micro-organisms in your gut is not to be under-estimated, we will be learning more about the implications of gut ecology on diet, health, and especially in obesity regulation over the next few decades. This is one of humanity’s primary links to the environment and is essential for optimal immune function. As we learn more about allergies, we will also be learning more about the ecological properties of our own bodies.

The last article in the series should be out soon, stay tuned for the implications this research has on the future of modern medicine. Questions or corrections are always welcome!

Sources:

http://link.springer.com/article/10.1007/s11894-009-0045-z#page-1
http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=909284&fileId=S0007114502001782
http://www.sciencemag.org/content/308/5728/1635.short
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1379087/?page=2
http://journals.lww.com/jtrauma/abstract/1987/02000/endotoxin_but_not_malnutrition_promotes_bacterial.12.aspx
http://link.springer.com/chapter/10.1007/978-94-011-2364-8_4#page-1
http://www.ncbi.nlm.nih.gov/books/NBK7670/

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CDC/ Rodney M. Donlan, Ph.D.; Janice Carr (PHIL #7488), 2005

The Human Body is an Ecosystem (Part 3/5 : Oral Micro-Organisms)

Leave a Comment / Anatomy, balance, Digestive System, ecology, health, Organ Systems, Science

Part 3: Micro-organisms in the Mouth

Please see the other parts of the article; once they are completed the links will be active:

Part 1: anatomy of the human microbiome
Part 2: micro-organisms on the skin
Part 4: micro-organisms in the gut
Part 5: implications for modern medicine

"Gingivitis (crop)" by Lesion - Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Gingivitis_(crop).jpg#/media/File:Gingivitis_(crop).jpg — this human really needs to floss

Your mouth harbors a diverse, abundant, and extremely complex community of microscopic organisms. These bacteria form biofilms on the soft and hard tissues of your mouth, tongue, cheeks, tonsils and upper throat; this adhesion allows them to stick on the surface. Essentially, these bacteria form a sticky or slimy film that builds-up over time. These biofilms are known as plaque and their build-up is what causes dental diseases, such as periodontal disease (which research suggests is always preceded by gingivitis) and dental caries (cavities) as well as other diseases if they are able to enter the bloodstream.

Plaque (oral bacteria) build-up in the mouth is normal; its control is what prevents tooth decay and gum disease. These bacteria have evolved mechanisms to evade and modify the host; the host in turn has a defense system that monitors bacterial colonization and prevents invasion. This equilibrium between the host and bacteria is dynamic and varies greatly from person to person.

When we are born, our mouths do not contain any bacteria yet; during the course of development bacteria accumulate to allow for the dynamic equilibrium that I previously mentioned. Some major landmarks are the growth of teeth, and full maturation at about the time of puberty. Some names of the bacteria are streptococci, lactobacilli (common in probiotic supplements), staphylococci, corynebacteria and some other anaerobic bacteria (non-oxygen consuming); streptococcus salivarius (think saliva) is very interesting because it colonizes the mouth and upper respiratory tract just after birth and is an opportunistic pathogen, meaning it rarely finds its way into the bloodstream to cause harm (usually a decrease in white blood cells) and is mostly beneficial to digestion.

You can probably see why disrupting the bacterial growth in your mouth is a daily activity; plaque build-up can cause unhealthy amounts of bacteria in the mouth, especially with large amounts of sugar consumption. Flossing should be a daily activity as well because it performs the same functions as brushing in that it reaches the places that your toothbrush doesn’t in between the teeth and along the gum-line. However, I think that brushing three times a day is probably somewhat of a myth promoted by the dental industries; once a day is probably all you need, unless you are eating food with high bacterial content or sugar content regularly, or food with high acidity (which is probably the case if you are vegan, vegetarian, or just eat lots of fruit).

The WHO (World Health Organization) says that nearly all adults have dental carries during their life. It’s estimated that currently 36% of the population has carries and that number is steadily increasing as the world becomes more developed because of simple sugar consumption. Remember that bacteria love sugar!

Interestingly, kissing with full tongue contact is evidenced to provide exposure to the oral micro-organisms of the other and could be an indicator for the hosts about the bacterial health of their partner. This might indicate mating compatibility, amongst other things. Some of the bacteria that are shared on the tongue’s surface have long-term colonization effects, meaning that kissing might lead to increased diversity in tongue bacteria. Cool, right? So kissing might be some kind of a test for bacterial compatibility in your potential mate during the courting process.

This article is probably the shortest in the ecosystem of the human body series. I hope you are enjoying it! Part 4 is all about gut bacteria, so check back soon to learn all about gut health.

Please leave any questions or feedback in the comments, thanks for reading.

Sources:

http://www.sciencedirect.com/science/article/pii/S0095454313001073
http://onlinelibrary.wiley.com/doi/10.1046/j.0906-6713.2002.003421.x/abstract;jsessionid=3363B7658E220D69B2BDB670F2CE5436.f04t02
http://my.americanheart.org/professional/General/The-Complexity-of-the-Periodontal-Disease_UCM_439052_Article.jsp#mainContent
http://www.homd.org/
http://jb.asm.org/content/192/19/5002.full
http://www.microbiomejournal.com/content/2/1/41

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By Photo Credit: Janice Carr Content Providers(s): CDC/ Segrid McAllister [Public domain], via Wikimedia Commons

The Human Body is an Ecosystem (Part 2 of 5: Skin Micro-Organisms)

Leave a Comment / Anatomy, ecology, health, Organ Systems, philosophy, Science

Part 2: Micro-organisms on the Skin

Please see the other parts of the article; once they are completed the links will be active:

Part 1: anatomy of the human microbiome
Part 3: micro-organisms in the mouth
Part 4: micro-organisms in the gut
Part 5: implications for modern medicine

On your epidermis (skin), there is an estimated 1 trillion micro-organisms known as skin flora, or skin microbiota. The word microbiome actually refers to their genomes, and there are about one thousand different species. Most live on the top-most layers of the skin and on the top of your hair follicles.

Skin flora are usually commensal (non-harmful) or mutualistic (beneficial). A primary benefit from these micro organisms is protecting against transient pathogens (traveling from another host) by competing for nutrients, secreting chemicals, or stimulating the skin’s immune system. Resident microbes (native to your skin) can cause skin diseases and enter the bloodstream creating illness and disease, particularly in people with weakened immune systems.

There are three different categorizations for the ecology of skin flora: sebaceous (oily or fatty), moist, and dry. sebaceous areas tend to have the greatest richness of bacterial species. The spaces between fingers and toes and inside of the belly button are the most diverse, and the nostrils and back tend to be the most similar between people. Interestingly, one study has shown that the area behind your heel has the greatest fungal diversity of the body. It also seems that as you go up the body from the ground (feet to head) there is a decrease in diversity of fungus, which intuitively makes sense because the ground has a huge amount of bacterial diversity that your body probably wants to protect against. Your feet have lots of fungus and the oily places on your body have lots of bacteria. Interestingly, most of the species of bacteria studied occasionally have pathogenic capabilities. It seems that there is a balance on the body, that when disrupted, can lead to many of the micro-organisms to become pathogenic. Let’s look into that a little bit more.

Flora can be beneficial, pathogenic, or commensal (non-harmful). Often, they can be all three, depending on the strength of the hosts immune system. I recommend reading this study on the balance of flora on the skin and how they interact, because it is extremely complex and very interesting. Essentially, the work in balance to keep each other from becoming too numerous and killing one type of bacteria can lead to growth of fungus.

Odor, interestingly, is not caused by sweat. It is caused by bacteria consuming it and creating byproducts that we consider smelly and unattractive.

Lets get back to the idea that the bacteria on your skin are actually mutualistic and beneficial when in balance. The skin creates antimicrobial peptides that control the growth of skin microbes. One example is cathelicidins which in addition to directly controlling bacterial populations, secretes Cytokine, which induces inflammation, skin regrowth, and blood vessel regrowth. Atopical dermatitis is linked to suppression of cathelicidin production; a major factor contributing to its production is Vitamin D3 (which actually isn’t a vitamin because the body produces it instead of needing to ingest it).

Your skin is slightly acidic when healthy. It has a PH of 4-4.5 due to lactic acid in sweat and produced by skin bacteria. Antimicrobial substances secreted by the skin are enhanced in acidic conditions and in alkaline conditions are more easily shed. The shedding of skin is one way that your body manages the buildup of flora on its surface. The immune system can produce cell mediated immunity against microbes, but some fungi have evolved to limit the immune response against them.

Micro-organisms also play a role in non-infectious skin diseases, like acne, atopic dermatitis, rosacea, and psoriasis. Damaged skin can cause bacteria to become pathogenic. P acnes is a particular bacteria that causes acne, which can be healthy in some people and pathogenic in others. Probiotics are being used to balance the imbalance of skin bacteria that can cause acne.

Atpoical dermatitis is linked with low bacterial diversity; low gut microbial diversity in babies have been associated with increased risk in dermatitis. Other diseases will likely have probiotic cures in the future, used again to balance the populations of bacteria on the skin. These bacteria can also build immunities; the use of bacterial and fungicidal soaps will inevitably lead to bacterial and fungal populations which are resistant to the chemicals employed.

Skin flora also do not readily pass between people. This doesn’t mean you shouldn’t wash your hands after the bathroom (fecal bacteria are different from skin bacteria and make up close to 50% of your feces). The most effective (60 to 80% reduction) antimicrobial washing is with ethanol, isopropanol, and n-propanol. Viruses are most affected by high (95%) concentrations of ethanol, while bacteria are more affected by n-propanol. Unmedicated soaps are largely ineffective at controlling bacterial populations.

Over washing your skin can lead to damage through loss of water creating dryness. There are lipids in the skin that can be removed by detergents and alcohols and wearing gloves can exacerbate the problems of already irritated skin. Damaged skin can lead to normally mutualistic or commensal bacteria to become pathogenic.

Skin flora is less diverse than gut flora. Both are less diverse than soil flora. Next time, we’ll talk about oral bacteria and how your mouth has an ecosystem all its own. Stayed tuned for part 3: Oral microbiology.

I hope you’ve enjoyed this article. Please feel free to ask any questions in the comments, or to add anything you’ve found in your own research. Always happy to start a conversation.

<3 from Vietnam, Elliot

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overpopulation: John B Calhoun rat universes

Overpopulation and its Potential Effects on Humanity

Leave a Comment / apocalypse, balance, ecology, global warming, health, mental health, mindfulness, news, opinion, philosophy, philosophy, reality, Science

Overpopulation and Humanity’s Destiny

If we don’t halt population growth with justice and compassion, it will be done for us by nature, brutally and without pity- and will leave a ravaged world.

-Nobel Laureate Dr. Henry W. Kendal

By the year 2050, the Earth’s population is estimated to reach a staggering 9.6 billion people. Many scientists would consider this to be overpopulation of the planet. It is currently believed that there are 7.2 billion people on Earth, but this is just a guess. In reality, we don’t really have any idea how many people are on the planet, just a lot of supposedly “good guesses”. And unless we make some major breakthroughs in the fields of energy, ecology, climatology, and agriculture the human race has a good chance of experiencing a severe decline in population, possibly even extinction because of overpopulation. A lot of things need to change in our civilization’s infrastructure if the human race wants to survive for the next millennia and even more if we are to prosper.

I’m not an alarmist. There’s no need to panic. But you should probably reconsider your consumption patterns, because you will be economically pressured to change them in the next 20 years. Especially if you live in the United States. But the world isn’t going to end in the next 6 months. In fact, Earth will be fine, especially in the long run. We live on a planet that is incredibly good at balancing itself, which we are seeing now with the effects of climate change (see my review of ‘Chasing Ice’ if you want some good evidence of what is happening to the glaciers of the planet). But weather patterns are going to get more and more severe unless we can find ways to mitigate the greenhouse gas effect and humanity’s consumption of fossil fuels.

A Tipping Point for Humanity’s Population?

It is entirely possible that human’s have reached what scientists call “peak oil”. At this point, we might be running out of oil, even though in the last 6 months we have isolated and reproduced a fungus that can produce petroleum. We might also be able to clean up the world’s largest oil spills with a different type of fungus. Advancements in science are what is going to save us. If you don’t know about the scientific method, you should read this article.

All of these developments can be attributed to the massive growth in human population at the cost of our environment. These problems WOULD NOT exist if humanity was better at living symbiotically with our environment. Yes, I say this with 100% certainty. We tend not to look at situations holistically and see only what is in front of us. In this overpopulated state, we need to either mitigate the effects of our oil use while simultaneously finding sustainable sources of it, or we need to find an alternate, sustainable fuel source for the world’s transportation.

Alan Watts said that the fundamental problem with the current state of society is man’s isolation from nature. This allows for our overpopulation of the planet. Things like A/C, cars, roads, airplanes, deforestation, warehouses, skyscrapers, and dams are all examples of destruction of the environment rather than cultivation. Some of these things can be symbiotic with nature if architected properly (ie climate regulation, terraforming, sustainable fuels, nuclear fusion, etc.). Watts said that in the 60s.

The problem with humans is that we view ourselves as separate from our environment, when in fact the two are the same. Religion is a huge cause of this. For some reason, we feel like we are better than our environment, better than animals, because god made us special. In my last article on human microbiota, I explained how humans have a hole inside of us, called the gastrointestinal tract or gut, that is really a part of the outside environment. So in reality, humans and our environment are the same thing. It is largely our ego and search for control that has led us to believe that we are ‘superior to’ or greater than our environment.

The problems are rather simple. Yet people have a tendency to be so over-reactive to seeing how humans have affected our environment. This allows news companies and especially shitty internet journalism to get an emotional rise out of us. And after this emotional reaction, we tend to become inactive and hopeless, rather than adjusting our behavior. I’ve witnessed this personally within myself. I waste energy on an emotional reaction, rather than thinking about how much waste I create on a daily basis. There are examples in our modern culture. Water consumption in southern California is an excellent example. Some people don’t even believe that there is really a drought.

Americans, as only 5% of the world’s population, use 24% of the world’s energy; some sources estimate the average American uses as much as 160 gallons of water a day. So instead of writing emotional facebook posts, being reactive and emotional about the issue take matters into your own hands; take shorter showers, try to drive less (obviously you have to drive to work and to get your kids to soccer and all that stuff because our infrastructure isn’t setup symbiotically). Try to use less energy, wash only dirty clothes, turn off your lights. Then you can stop worrying about our planet because that’s all you can do. Manage yourself.

We need to consider what it might be like if we had to live in 100% unity with our environment; which sooner or later will become a necessity if we are to survive with such a large population. Cities will be rebuilt. Freeways will be redesigned. We are already seeing the beginning of some amazing developments.

Answers to the problem of overpopulation?

Nuclear fusion might be the answer to our energy problems, but that technology is expensive and we’re going to have to wait for it. However, creating and harnessing the power of stars is how we will survive for the next millennia. There are a few awesome projects happening that might excite you for the future, rather than scare you away from it. The international thermonuclear reactor project is an exciting project underway and Lockheed Martin has somewhat suspiciously said that they have an even more compact reactor on the way (the scientific community is very skeptical because they haven’t yet released data). Our ingenuity will be the key to our survival.

I am trying to say that hopelessness is a silly conclusion and that hope is key to survival and prosperity. One way to inform yourself of some of the negative possibilities in our future is to learn about John Calhoun’s mouse paradise experiments on overpopulation. It is a concept known as the behavioral sink, or societal collapse due to overpopulation. However, even Calhoun left his studies with hope for the future of humanity, especially considering that there were rats that seemed to be resilient to the effects of overpopulation. His studies involved creating mouse utopias, then allowing the mice to overpopulate. In his studies he found

“Many [female mice] were unable to carry pregnancy to full term or to survive delivery of their litters if they did. An even greater number, after successfully giving birth, fell short in their maternal functions. Among the males the behavior disturbances ranged from sexual deviation to cannibalism and from frenetic overactivity to a pathological withdrawal from which individuals would emerge to eat, drink and move about only when other members of the community were asleep. The social organization of the animals showed equal disruption. […]

The common source of these disturbances became most dramatically apparent in the populations of our first series of three experiments, in which we observed the development of what we called a behavioral sink. The animals would crowd together in greatest number in one of the four interconnecting pens in which the colony was maintained. As many as 60 of the 80 rats in each experimental population would assemble in one pen during periods of feeding. Individual rats would rarely eat except in the company of other rats. As a result extreme population densities developed in the pen adopted for eating, leaving the others with sparse populations.

[…] In the experiments in which the behavioral sink developed, infant mortality ran as high as 96 percent among the most disoriented groups in the population.”

-John B Calhoun from “Population density and social pathology”(1970). California medicine 113

We have Hope for the Future

Over-reactivity from fear is something you should actively fight within yourself. Overpopulation is a problem that humanity can work together to solve. There is no need for fear. Find hope, reasons to belief in your own ability to consume less, if no one else’s. Fear and panic are the enemies to social order. Stop believing the news, especially internet articles aimed at reactivity. That’s what they want, to shock you into reading. If you can fight your fear with hope and action you will lead yourself to more action oriented at personal results, therefore affecting the collective in the greatest possible way that you personally can. See what you can do, challenge yourself, experiment with alternate lifestyle behaviors. You’ll surprise the shit out of yourself 😉

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The Human Body is an Ecosystem (Part 1 of 5)

2 Comments / Anatomy, ecology, health, nutrition, Organ Systems, Science, yoga

Part 1: Anatomy of the Human MicroBiome

Please see the other sections of the article; once they are completed the links will be active:

Part 2: micro-organisms on the skin
Part 3: micro-organisms in the mouth
Part 4: micro-organisms in the gut
Part 5: implications for modern medicine

Your ability to think of yourself as one whole being is an incredible phenomenon; especially considering that the human body is made up of 37.2 trillion human cells that can act somewhat independently, which is really a gross estimate at this point. What is really interesting is that the majority of the cells in your body are actually bacteria cells, mostly that reside in the human gut. Modern estimates say the proportion is about 10 to 1 (baceria to human cells). That means there are possibly over 300 trillion bacteria cells in your body. In fact, there is evidence to suggest 90% of our cells are microbes or micro-organisms. (small animals,fungi, bacteria, archaea, algae, and protozoa). Outside of the body, on the skin, there are also a fair amount of micro-animals that are excluded from the human microbiota, or the aggregate of the micro-organism genomes on the skin, in the gastrointestinal tract, in the saliva, oral mucosa, and conjunctiva.

Your body might have a proportion of 10 to 1 micro-organisms to human cells, according to one study, which makes it important to consider your body as an environment. Basically, you have an entire ecosystem in your digestive track and this aspect of your body is what merges you with your environment. The digestive tract, from the mouth to the rectum and anus, is essentially a part of the outside world which is why there is so much bacteria and other micro-organisms living there. This is also the reason behind recent skepticism of the effectiveness of antibiotics for certain illnesses and why there is so much emphasis on probiotic in modern nutrition science.

With our new understanding of the micro-organisms that co-exist within humans, we have also begun to study and catalogue the different genomes, however, scientists have found a nearly infinite variation in how the micro-organisms interact and function. The same bacteria cells might function completely differently within the body of another, making the biome extremely difficult to study. The Human Microbiome Project (HMP) is the organization fueling the majority of this research and they are attempting to catalogue the different bacteria and their functions in the body in a similar way to how the Human Genome Project catalogued the human genome.

What this means is that there are not baseline calculations for micro-biome health because it varies so greatly from person to person. Also, different sites on the body have their own distinctive communities; skin and vaginal sites have a smaller amount of diversity than the mouth and gut. Different bacteria like to inhabit different places in the mouth from person to person and can also have different, specialized functions. Over 500 types of bacteria live in the gut alone, mostly in the large intestine or colon. These bacteria are incredibly useful because they break down food and allow for the absorption of nutrients into the human body, however, in times of lowered immunity they can also act as opportunistic pathogens (meaning they can cause disease). E. Coli is one of the bacteria that exist in the gut, and certain mutated strains of this can also cause disease (as you probably heard in the news). But this is a healthy bacteria that when balanced against a strong immune system provides enormous benefit to the digestion and absorption of nutrients.

Here are the elements that create the chemical balance of your body and their associated proportional mass:

Oxygen = 65%
Carbon = 18%
Hydrogen = 10%
Nitrogen = 3%
Calcium = 1.4%
Phosphorus = 1.1%
Potassium = .25% (can be radioactive)
Sulfur = .25%
Sodium = .15%
Chlorine = .15%
Magnesium = .05%
Iron = .006%
Fluorine = .0037% (toxic in large amounts)
Zinc = .0032%
Silicon = .002%
Rubidium = .00046%
Strontium = .00046%
Bromine = .00029%
Lead = .00017% (toxic in high amounts)
Copper = .0001%
Aluminum = .00000087%
Cadmium = .00000072% (toxic in high amounts)
Cerium = .00000057%
Barium = .00000031% (toxic in high amounts)
Tin = .00000024%
Iodine = .00000016%
Titanium = .00000013%
Boron = .00000069%
Selenium = .00000019% (toxic in high amounts)
Nickel = .00000014%
Chromium = .000000024%
Manganese = .00000017%
Arsenic = .00000026% (toxic in high amounts)
Lithium = .000000031% (toxic in high amounts)
Mercury = .00000019% (toxic in high amounts)
Caesium = .000000021%
Molybdenum = .00000013%
Cobalt = .000000021%
Antimony = .00000011% (toxic in high amounts)
Silver = .00000001%
Niobium = .0000016%
Zirconium = .000006%
Lanthanum = .00000137%
Tellurium = .00000012%
Gold = .000000140%
Vanadium = .00000026%
Uranium = .0000000013% (toxic in high amounts)
Beryllium = .00000000005% (toxic in high amounts)
Radium = .0000000000000000001% (toxic in high amounts)

You’ll notice a few very interesting things about some of these elements. The first is that many substances can be toxic in high dosages, and obviously you can be malnourished if you have less of these elements. The second is that there are radioactive elements in your body; yes you are radioactive, just like the Earth. The radioactive elements are particularly interesting: Potassium40 has over 4,000 events per second in the human body; Carbon14 has over 3,000; Rubidium has over 100; and Lead210, Tritium, Uranium238, Radium228, and Radium226 all have under 20 events per second. To me, this emphasizes the need for balance in the human body; not too much and not too little.

It is astonishing to think that there is a hole, a series of tubes really, inside of you that is really a part of the outside environment. But this makes perfect sense to a Taoist, who would say that a human ‘is the same’ as the environment they are in. Two sides of Yin and Yang that are always playing together to continue life. Most research suggests that our gut flora (or the collective bacteria in an ecosystem) is symbiotic and has a direct relationship with the functioning of the body.

The functions of the flora are the following (though it has been found that some people can function without gut bacteria): fermenting unused energy substrates, training the immune system, preventing growth of harmful species, regulating the development of the gut, producing vitamins, and producing hormones. Extensive modification and imbalances of the gut microbiota and its micro-biome or gene collection are associated with obesity. However, in certain conditions, some species are thought to be capable of causing disease by causing infections or increasing risk for cancer (paraphrased from Wikipedia).

So obesity might be better understood as an imbalance in gut bacteria that leads to slower digestion and less nutrient absorption. It also makes sense that there is a cascade type of effect, where the body has “momentum” to digest with large amounts of built up gut bacteria. So a ‘fast metabolism’ might be summarized as healthy gut flora. Interesting stuff right? In my opinion this is some of the most exciting science being researched today.

This is part of the reason why a balanced diet is key to being healthy. There is a lot more information coming, I’m especially excited to get into the gut flora and their implications for mental and cognitive health. The next article will be about the skin, and all of the micro-organisms that live on you. Stay tuned, hoping to have it out tomorrow.

The Human Body is an Ecosystem (Part 1 of 5) Read More »

health

Why is Nose Breathing Important?

Filtration Systems

Why is this important for yoga?

Vegetable Protein Sources

Sources:

Yoga’s Primary Benefits

Yoga and the Nervous System

Yoga and Stress Regulation

Part 4: Micro Organisms of the Gut

Part 3: Micro-organisms in the Mouth

Part 2: Micro-organisms on the Skin

Overpopulation and Humanity’s Destiny

A Tipping Point for Humanity’s Population?

Answers to the problem of overpopulation?

We have Hope for the Future

Part 1: Anatomy of the Human MicroBiome

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