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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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There are more bacteria in your mouth than there are people in the world.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.