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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Medication errors are more common among seriously ill patients than with those with minor conditions.
The longest a person has survived after a heart transplant is 24 years.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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