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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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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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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

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Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

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