Probiotics and Why Bacteria is Good for You

Posted on August 16th, 2014 by in Healthy Living, Nutrition

probioitcsBenefits of the bacteria in our digestive tract, also referred to as gut microflora, have gotten a lot of attention in the scientific community lately—and therefore the professional nutrition and supplement communities as well. The science is fascinating, but what does it really mean for you?

First, what is gut microflora? Also known as gut bacteria, gut bugs, microbiota, and microbiome, gut microflora is the collection of bacteria and other microorganisms that live in your digestive tract. There are about 100 trillion microorganisms in your gut—10 times the total number of cells in your body (remember, these microorganism are not your body, they are separate life forms).

While your microflora are technically not you, they act a lot like an organ of your body. They’re a large part of your immune system; they help break down fiber that nourishes the cells of your digestive tract; and they break down toxins, helping create a healthy balance in the body.

But not all microflora collections are equal. Scientists have come up with three microflora types, sort of like blood types, and some are beneficial while others can set you up for infections, food sensitivities, and overall poorer health.

Can you turn a high-crime “bug city” into a peaceful metropolis? It seems that you can, through probiotic therapy and a fiber-rich diet.

Research suggesting that probiotic therapy can help children with infectious diarrhea and ear infections has been around for a while and used with success. Today, research suggests that improving the balance of your microbiome can positively impact hypertension, weight, diabetes, constipation, and other issues.

Should you take a probiotic?

The answer is, it depends on who you are. Below are three broad categories I encounter in clinical practice.

Definitely worth an experimental trial: If you have digestive symptoms—constipation or diarrhea, irritable bowel or bloating—a course of probiotics is likely to help (especially if you work with a skilled nutritionist who can help you with supportive dietary changes). If you get every cold, flu, and infection that wanders by, probiotics may help strengthen your immune health and make you a little more resistant.

Likely worth a trial: For issues like weight, diabetes, hypertension, cancer, or heart disease, if a good probiotic is not prohibitively expensive for you, a trial to see if it helps these imbalances is worth it—particularly when you weigh it against the years of suffering these conditions may cause.

Probably not necessary; opt for fiber and fermented foods instead: Taking a commercial probiotic is likely not necessary for those who are generally healthy and in reasonable balance, are not working with a chronic disease, and eat a plant-based diet with adequate fiber (the Institute of Medicine of the National Institute of Health says that women need at least 25 grams of fiber and men at least 38 grams, and we all do even better with 50 grams or more). It won’t hurt, but it might not help. Instead, introduce more fermented food—like sauerkraut, tempeh, kombucha tea, and kimchee—into your diet to cultivate a healthy intestinal environment.

Which probiotic should I take?

If you are a good candidate for a trial of probiotics, focus on potency. Look for a probiotic with at least one billion CFUs per dose. If the dose is less, it’s likely the bugs won’t survive your stomach acid to reach your intestines in adequate numbers to help. Several brands have been used with success in clinical trials, including Dannon’s Activia yogurt and DanActive drink, and the supplements Culturelle and Align. It is important to note some of these products do not use organic dairy products, so if that is a factor for you, read the labels carefully. Also, be aware that there are duds out there; recently released a report finding that more than a quarter of the probiotic supplements tested contained 56 percent or less of the potency indicated. A skilled nutritionist will have experience with various brands and can guide you in the right direction.

Join Annie B. Kay at Kripalu to learn more about nutrition and healthy eating.


About Annie B. Kay, MS, RD, RYT

Annie is Lead Nutritionist at Kripalu. Author of the award-winning Every Bite Is Divine, she is also an integrative dietitian and a Kripalu Yoga teacher. Annie is the former director of the Osteoporosis Awareness Program at the Massachusetts Department of Public Health. For nearly 20 years, she has been an advocate for science-based mind-body health in the national media, at conferences and workshops, and through her writing. She knits, cooks, gardens, and writes.

4 Responses to “Probiotics and Why Bacteria is Good for You”

  1. Mary McInnis Meyer August 16, 2014 8:43 am #

    A bit more helpful info: Prebiotics. You need to feed the good microflora for them to thrive when you’re taking probiotics. It’s eating what they eat. More than a general fiber recommendation. Plant-based, lots of good greens. So, I trick myself into eating better by feeding “others” well… and by not throwing away my $ on starving probiotics. ;)

    • KripaluEditor August 16, 2014 9:21 am #

      Hi Mary,
      Great tip! We can never have too many greens, right?
      Thanks for reading and commenting!!

    • Annie B. Kay, MS, RD, RYT
      AnnieBK August 18, 2014 2:57 pm #

      Hi Mary – thanks and I love that tip – feeding others – hello little ones!
      Agree on the need to be mindful of prebiotics, especially if you’re taking a probiotic. Other great food sources are garlic and onions, raw dandelion greens, beans and asparagus.
      All the best to you,

      • Mary McInnis Meyer August 18, 2014 4:56 pm #

        Thank you, Annie! I know you’ve got all kinds of wisdom on this, and understand the limitations of word counts. So, I piped in. ;) On this thread – thank you for the great additions to food for little friends!

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