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Vaccines prevent between 2.5 and 4 million deaths every year.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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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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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.