Chlorine

<p>Even if you aren't a taker of antibiotics, your herd of bacteria can become so depleted that it can no longer do what you want it to do. Pesticides in the food you eat and chlorine in the water you drink will slowly poison bacteria and over time your intestinal tract can become just as devoid of them as if you had taken antibiotics. When this happens, unfriendly microorganisms such as disease-causing bacteria, yeasts and fungi set up shop in your digestive tract. Then you've got a problem because it is very difficult to evict them.

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