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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
European scops owl and the extinct Otus mauli species from Madeira.
Using a microscope to study the human body
William Masters and Virginia Johnson are among the most influential researchers in the history of th
Leonardo da Vinci, Study of Human Proportion: The Vitruvian Man.
The two circuits of the human cardiovascular system
Human mitochondrial transcription