how do bacteria from probiotics survive the stomach acid

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Many people take probiotics( gummies, yogurt, kefir etc.) to aid in their digestion and gut health. To my knowledge, bacteria has to reach the large intestine to have any benefit. Before reaching the large intestine, bacteria has to go through the stomach. There is HCL secreted there which would give the stomach contents a pH from 1.5 to3.5.
How does the bacteria survive that low of a pH?

In: Biology

3 Answers

Anonymous 0 Comments

A lot of the major “probiotic” species are actually pretty acid-resistant. However, you are completely right in that a lot of commercial supplements probably…don’t survive.

Also, not a doctor but I am a med student and there’s very little evidence that these probiotic supplements do anything useful.

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