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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 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.
The human body produces and destroys 15 million blood cells every second.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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