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Did you know?
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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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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The average adult has about 21 square feet of skin.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.