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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.
Did you know?
More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.