Your body produces it when your skin is in the sun or when you eat vitamin-D-rich foods. It can be hard to notice a vitamin D deficiency because it sometimes yields no symptoms. One study found ...

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The overall average body fat percentage in the United States is about 39.9% for women and 28.1% for men, so below these amounts would technically be “below average.” However, most people in the United ...

The body contains all the internal organs, body parts, bones and muscles that make up the human anatomy. Your fleshy body has evolved over millions of years, and this is the science changing the way ...