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The gut is home to a 100 trillion microorganisms. This is
known as your gut microbiome. Everyone’s is different and is affected by age,
genetics, environment and diet.
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Probiotics are good bacteria that live in the gut. They
help improve digestion, form vitamins, activate healthy-promoting compounds and
prevent infection. The most common sources are: yogurt, kefir products and some
aged cheeses that contain "live and active cultures".
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Prebiotics act as the food for probiotics (good bacteria
in the gut). Examples include: asparagus, tomatoes, leeks, garlic, bananas,
brown rice, wild rice, buckwheat, and soybeans.
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If your immune system is weakened, probiotics may be
harmful so focus on foods with prebiotics instead. Make sure to speak with your
doctor.