If your stomach acid so acidic that it can melt almost anything, why do other foreign organisms and objects still pass through like nothing happen? Why do tapeworms continue to survive and other bacteria?
In: Biology
Your stomach is actually not that acidic-about 1.5 to 3.5, or comparable to lemon juice. There are many things that are resistant to stomach acid, including organisms. The organisms that have evolved to survive our stomach acid are those that specialized to infect humans. The ones that weren’t able to survive that trip didn’t reproduce, while the ones that did went on to pass those genes conferring acid resistance to the next generation.
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