Healthy Gut, Happy Gut — How Probiotic Bacteria Can Benefit You:

The idea that the bacteria that live in the warm, dark recesses of your gut have health benefits is an intriguing one. After all, most people think bacteria are the “bad guys.” These days, it’s clear that not all bacteria cause illness and some types of bacteria you might actually want to have around. The “good” bacteria you want to cultivate help support the health of your gut and your gut associated lymphoid tissue — the portion of your immune system that lies in your intestinal tract. After hearing so much about the health benefits of gut-friendly bacteria, called probiotics, you’re probably convinced you need more of the beneficial ones — but why? How do probiotic bacteria exert their benefits?

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