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Your heart beats over 36 million times a year.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
The longest a person has survived after a heart transplant is 24 years.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
Medication errors are three times higher among children and infants than with adults.
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