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Human Strain Probiotics

Do You Know What’s In Your Probiotic?
A Comparison of Human Strains Vs. Dairy and Animal Strains

Probiotics Human Strain

A probiotic is a probiotic, right?

Not so fast.

Before we dive in to the most effective probiotics for your gut health, let’s review the three main origins of probiotic strains:

  • human
  • dairy
  • animal

Now before you buy a supplement, you might be wondering:

Why do supplement companies use dairy or animal probiotics for human consumption in the first place?

The answer might surprise you.

Animal Strains Aren’t Just for Humans

Dr. Nigel Plummer, a doctor in microbial physiology who specializes in the use of probiotics to fight chronic disease, was involved in designing animal strains…for animal consumption.

Dr. Plummer explains1:

“I was involved in designing animal probiotics. This was particularly for the agricultural industry, where we were looking at designing probiotics for young pigs and young calves, to prevent diarrhea.

In a badly managed farm, you might have 20 to 30% of young pigs and young calves that actually die from diarrhea before weaning.”

The Case for Human Strains

Do human beings also benefit from animal-based strains?

It’s important to understand that one of the main functions of a probiotic supplement, on a cellular level, is to attach to your epithelial cells. If probiotics can’t attach to your cells, then you’ll reap less rewards in terms of your gut health.

Dr. Plummer explains:

“When we started to look at human probiotics, we compared the way they attach to human epithelial cells, to the way that the animal strains attach to human epithelial cells.”

The winner?

“Although the animal strains did attach to human epithelial cells…the efficiency of colonization of the epithelial cells was much lower than the human strains.

“This was very good evidence…that human strains were more adapted to the environment of epithelial cells than animal strains.”

It might make sense to think about human strain probiotics as already adapted to your own human gastrointestinal tract. The animal strains just aren’t designed to attach to your cells–and improve your gut health–the way human strains can.

“The microflora in our GI tract is a very complex community. [Human probiotics are] adapted to the gut environment.”

What about dairy? Dr. Plummer believes that dairy-based strains, like yogurt, are also inadequate:

“Should we be using yogurt strains as probiotic strains? The answer is no.”

When choosing a probiotic supplement, you’ll reap more rewards in terms of your gut health, and relief from digestive discomforts, if you choose human strains over dairy or animal strains.

The Health Benefits of Human Strain Probiotics

If you suffer from Irritable Bowel Syndrome, antibiotic resistance, C. Difficile, and other digestive discomforts, can you really expect that human strain probiotics will help?

According to Seroyal, a medical research firm, the science is promising2:

“Human-sourced, non-pathogenic, proprietary strains provide naturally strong adherence, and natural pH and bile acid resistance.

Randomized, double-blind, placebo-controlled human trials demonstrated that these probiotic strains are safe, and help to reduce symptoms of IBS, reduce incidence of C. Difficile, reduce antibiotic resistance, and maintain intestinal flora post antibiotics.”

Coming Soon…

Here at Good Gut Solution, a leader in gut health since 1998, we are currently looking towards manufacturing a human strain probiotic that’s purely a probiotic, and more effective for your gut than existing animal and dairy strains.

To get notified when it’s available, join 25,000 readers on our Good Gut Solution newsletter (on the left sidebar). You’ll also receive a coupon for 10% off all probiotics and other supplements store-wide.

Further Reading

  1. Modern Healthcare Professional: What are the Advantages
    of Using Human Strains Over Dairy or Animal Strains?
  2. Seroyal: Human Lactic Commensals (HLC)/Human MicroFlora (HMF) probiotics
  3. Allen S.J. et al. Dietary supplementation with lactobacilli and bifidobacteria is well tolerated and not associated with adverse events during late pregnancy and early infancy. J Nutr 2010; 140: 483-488.
  4. Williams EA, et al. Clinical trial: a multistrain probiotic preparation significantly reduces symptoms of irritable bowel syndrome in a double-blind placebo-controlled study. 2009; 29(1): 97-103.
  5. Plummer S, et al. Clostridium difficile pilot study: effects of probiotic supplementation on the incidence of C. difficile diarrhoea. Int Microbiol. 2004;7(1):59-62.
  6. Plummer SF, et al. Effects of probiotics on the composition of the intestinal microbiota following antibiotic therapy. Int J Antimicrob Agents. 2005; 26(1); 69-74.
  7. Madden JA, et al. Effect of probiotics on preventing disruption of the intestinal microflora following antibiotic therapy: a double-blind, placebo-controlled pilot study. Int Immunopharmacol. 2005; (6): 1091
  • Shelly

    I’m curious about what the human source of probiotics is?

    • Thanks, that’s a great question. Obviously “human strain” means originated from the human digestive tract. It is isolated as nothing but pure bacteria and then undergoes many generations of growth in an ideal medium known as substrate (like a petry dish or a food source) and allowed to multiply. There is no trace of the original source. These human strain probiotics are superior to all others because they are genetically designed and suited for the human digestive system.

      We get them from North Americas top supplier of quality probiotics.

      Dr Pam

  • John Woodfield

    Hey Let me know when you have some human strain probiotics, I already take a version sold by Rockwell Nutrition that is supposedly human strain and it works quite good….but the more strains available in the human culture form would be great….

    • Hi John, Yes we’ll be sure to tell you. You’ll hear more and more via our blog. Dr Pam.

  • Tony

    what about Align? Is that human strain?

  • Vicki

    Please let me know when your human strain probiotics are available. Thank you

  • Sandra Sutton

    Interest in human strain cultures

  • Tom

    “To get notified when it’s available, join 25,000 readers on our Good Gut Solution newsletter (on the left sidebar). You’ll also receive a coupon for 10% off all probiotics and other supplements store-wide.”….. I didn’t find a left sidebar, and would like to be notified when the human strain probiotics are available. Thank you, Tom

    • Hi Tom,
      Ah yes, you’re absolutely correct. The left side bar of our website does not display on the blog – thanks for pointing it out. The left side bar refers to the left side bar on the home page of our website http://www.goodgutsolution.com
      Dr Pam


    How are human strains typically obtained
    from human digestive tract?

    What is meant by human strains probiotics?
    What are called strains in probiotics?

    What is meant by human strains probiotics? What are strains in

    How can you tell whether a probiotic is of human strains if it is is
    not indicated on the label or on the box?

    Where can I buy such probiotic online?


    Thank you & regards.

    How can you tell whether a probiotic is
    of human strains if it is not indicated on
    the label or on the box?

    Thank you & regards.

    How can you tell whether a probiotic is of human
    strains if it is not indicated on the label or box?

    Thanks n regards

    not indicated on the label or on the box?

    Thank you & regards.

    • Hi B K,

      Thanks for your comments.

      Please read this blog post to get more details about human strain probiotics.

      When the strain found in nature looks identical to the strain that we find in our gut, it is referred to as a ‘commensal’ probiotic – that is what we want. We want the body to identify the probiotic strain as the same as what it has growing in the gut. The human strains are found in pristine areas and are grown and encouraged to proliferate.

      The label ought to indicate whether it is human strain or not. Our Perfect Pass Probiotic is considered human strain. see https://www.crohns.net/page/C/PROD/PSN2000

      The other option is by FMT – fecal microbial transplant.

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