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Bacteria also help out by doing things cells are ill-equipped to do. For instance, bacteria break down carbohydrates (sugars) and toxins, and they help us absorb the fatty acids which cells need to grow. ... Most importantly, by having good bacteria in your body, bad bacteria don't get a chance to grow and cause disease.There are two ways bacteria can harm the human body: toxicity – the bacteria produce toxins which damage specific tissues in the body. invasiveness – the bacteria multiply rapidly at the site of infection and overwhelm the body's defence mechanisms. The bacteria may then spread to other parts of the body.
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