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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

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The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Erythrocytes (red blood cells) moving through a capillary in single file. Erythrocytes (red blood cells) moving through a capillary in single file.
The accessory organs of the digestive system: the liver, gallbladder, and pancreas. Image shows the The accessory organs of the digestive system: the liver, gallbladder, and pancreas. Image shows the
Strawberry Image From a Scanning Electron Microscope Strawberry Image From a Scanning Electron Microscope
Image of an Almost-Extrasolar Planet Image of an Almost-Extrasolar Planet
Eating Disorders and Body Image Eating Disorders and Body Image
Some obesity genes in the human genome. The green triangles represent single genes in which obesity Some obesity genes in the human genome. The green triangles represent single genes in which obesity
Video: Cardiac Cycle (Part 3 of 4)

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