There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Blood Pressure Cuff
Blood Flow Through the Cardiorespiratory System
Systems and Organs of the Human Body
Good hand and body mechanics when applying thumb pressure to the back.
ABO blood types pedigree
The age-adjusted rate of melanoma, a deadly form of skin cancer, from 1973 to 2000. Over that time p