Tag Archives: human microbiome

Your Microbiome: Eating for ten trillion

You have a fantastic and wonderful microbiome, or personal ecosystem of beneficial bugs, which means that you are in fact eating for ten trillion. While ten trillion helpful friends seems like a rather large dinner party, these good bacteria and other critters are busy constantly strengthening your immune system, helping you to digest your food and manufacturing vitamins in your gut as well as strengthening your skin and mucosal barriers by defending their turf from invaders.  If you’re a little fuzzy on the whole microbiome concept then here is more information about your own personal microbiome. Given everything that your good bacteria are doing for you, it makes sense to add some microbiome-friendly foods into your diet.




Simple Foods that Protect Your Good Bacteria – The  Microbiome Maximizing Diet:

  1. Breast Milk! Yeah –  probably not. But it’s a good option to give your babies because human breast milk is chock full of not only beneficial microbes that help baby to build a good microbiome, but also complex carbs (oligosaccharides) and glycosolated proteins that your baby can’t break down or digest.  But guess who can? Beneficial bacteria in the Bifidobacterium species. These Bifidobacterium buddies actually help coat and defend the babies growing intestinal tract. While it’s a little odd, breast milk is being used as an experimental treatment for some forms of intestinal disease in adults as well.
  2. Prebiotics. You may have heard this term before, probably from a supplement or on your probiotic bottle.  Prebiotics are actually specific carbohydrates, especially fibers, that are the preferred food for different strains of beneficial organisms in your digestive tract.  Just to review, the largest group of gut bacteria lives in your ascending colon, which connects to your small intestine and runs up the right side of your abdomen.  It is here that a fermentation process takes place.  In this fermentation process prebiotics are gradually changed and release different end-products that feed flora in a beneficial way. Prebiotics include inulin, galactooligosaccharide, and many other long-named substances which can be conveniently lumped into the much more pronounceable category of fiber.  Eating a diet high in fiber, fruits and veggies feeds your microbiome and helps your gut to have healthy bacteria and good digestion.

    Awesome wikimedia commons file of your digestive tract. Your ascending colon is where fermentation happens for your microbiome.

    Awesome wikimedia commons file of your digestive tract. Your ascending colon is where fermentation happens for your microbiome.

  3. Cultured Foods.  Foods that have been cultured actually have their own little microbiome – the process of fermenting or culturing food is simply allowing good bacteria to grow and partially digest those foods and give them a fabulous taste in the process. Think yogurt, kimchi, sauerkraut and cheese. Also there are cultured fruit juice (belly), cultured coconut water (inner eco), and cultured butter (Vermont creamery, organic valley) available.

So the short list is fruits, veggies, fiber and cultured foods.  Easy enough! These simple steps help you to maintain a great immune system, have healthy digestive function, and even maintain normal weight.  Yes – your microbiome can contribute to your body shape too. These are ten trillion friends worth keeping!



Your Microbiome: Are You Too Clean?

Your microbiome is getting a lot more attention lately, which makes sense because as of 10 years ago nobody even knew the word “microbiome” let alone had any idea why they should pay attention to it. Your microbiome, according to Joshua Lederberg who coined the term, is:

“The ecological community of commensal, symbiotic, and pathogenic microorganisms that literally share our body space.”

What that means in reality is that this is your population of bugs.  It’s the bacteria and microbes that populate your skin, your digestive tract, your mouth, ears, eyes, fingers, toes and genitals. It’s the community that makes up you. In fact, if you look at your entire body there are about 100 trillion organisms – that’s 100,000,000,000,000.  Essentially that means there are at least three times as many bacterial cells as human ones. Makes you think, doesn’t it?  Even without all the research, it follows naturally that just like your bacteria need you to survive, you need your bacteria to survive too.  Your microbiome helps you to protect yourself from harmful bacteria that might actually produce disease, help you digest your food, manufacture vitamins for you to absorb and generally maintain the health of your tissues. In fact there is a link between poor mixtures of bacteria in the gut and conditions like obesity, diabetes, rheumatoid arthritis, fibromyalgia and even some cancers.

Your microbiome, as imagined by Rosemary Mosco, artist at birdandmoon.com

Your microbiome, as imagined by Rosemary Mosco, artist at birdandmoon.com

So let’s talk about taking care of your microbiome – all those trillions of things are helping to protect you, so it makes sense that you should also protect them.  In this post we’ll talk about lifestyle factors and the next post will focus on the best diet for your community of trillions.




Keys  to a healthy microbiome:

  1. Get dirty already. There is a growing body of evidence that shows that modern standards of hygiene are linked to the increasing incidence of allergies and autoimmune disorders.  We don’t just keep clean, we actually make an attempt to ‘sterilize’ which is a horrible idea because if we actually managed it we’d probably die shortly thereafter. One of our major sources of new microbial material is simple soil – the earth from the place where you live.  This to me is a great reason to get out there and garden, to eat veggies from your garden straight out of the soil, and generally wallow around in the rich microbial environment that the earth has provided for us.
  2. Boycot the sanitizer. Of course it’s important to wash your hands if you’re exposed to people who have the flu or if you’re around a sick population, but wash with warm water and regular (not antibacterial) soap. Avoid the hand sanitizer, which typically contains toxic ingredients (like triclosan) and doesn’t actually help other than to encourage bacteria to develop triclosan resistance. So yes to normal hand washing as a way to prevent acute illness, but no to the overly-clean “sanitized” hands.
  3. Forget the antibacterial soaps. Not just do you not want to kill your bacteria, which sharply reduces the interest in anything antibacterial, there is also no actual benefit to most things labeled as antibacterial. Research studies have compared the effects of soaps and consumer products which claim to be antibacterial versus those which don’t and found literally no difference.  In fact, the FDA is currently taking a closer look at whether or not it is ethical for this labeling to continue.
  4. Skip the antibiotics unless they are absolutely necessary. Obviously antibiotics have a broad range of killing potential and that includes your healthy microbiome. Antibiotics don’t discriminate.  Obviously there is a time and a place where antibiotics could save your life and I am all for that use, but there is also a time and a place where your doctor hands you a prescription because they don’t feel right letting you leave the office without something in your hand, but it’s also probably not really useful for whatever you’re coming to see them for (like the ear infection). We also know that the effect of broad-spectrum antibiotics on your microbiome is long-lasting.
  5. Consider probiotics when you need them. Probiotics are basically packaged bacteria that are similar to the ones that make their home in your gut. If you’re in a situation where you had to take antibiotics or you had a stomach bug that might have knocked out the bacteria in your gut then it can be really helpful to replace those with a supplement.  Of course there are lots of different options for probiotics, and different ones are better for different situations so we’ll save the which-probiotic-is-best conversation for another day.
  6. Wear your probiotics with pride. It isn’t just your gut that benefits from beneficial bacteria, your skin is a colony too.  Fermented foods which contain bacteria similar to the bacteria in your gut can make a great topical treatment for a variety of skin imbalances.  There is a reason that yoghurt skin masks are so awesome.  Or kombucha toner. In fact, here are a couple of my favorite skin care recipes from my book, DIY Health: For Women.

Yummy Yogurt mask for dry skin:

1/2 Avocado
1 teaspoon yogurt
1 teaspoon honey
1 tbsp oatmeal

Protein Microbiome Tingler:
Leave this one on until it dries and it will refresh and renew your skin. The enzymes in the papaya and the probiotics in the kombucha eat away dead skin cells and replenish your skin microbiome and the raw egg firms up your collagen and connective tissue. You can always add a few drops of essential oil for additional pampering. Blend it up in the blender and apply to your face, decollete, or really any area that needs a little lift.

1 raw egg
1 tbsp kombucha
1/4 cup papaya

The bottom line is that if you’re fighting against your microbiome, or being generally  unfriendly with the sanitizers and wipes then it’s time to consider changing your tune and softening up your attitude towards your friendly helpers.  Without your microbiome, your life would be a whole lot harder so learn to love your own trillions of personal assistants.

For more information about your microbiome in general check out this great document from the American Academy of Microbiology.