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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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There are more sensory neurons in the tongue than in any other part of the body.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

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