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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

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Your heart beats over 36 million times a year.

A fossil leaf in low-grade coal A fossil leaf in low-grade coal
Age and Grammatical Knowledge The challenge of learning a second language rises with age. Source: J Age and Grammatical Knowledge The challenge of learning a second language rises with age. Source: J
The relative influence of heredity and the environment in human behavior has fascinated and plagued ... The relative influence of heredity and the environment in human behavior has fascinated and plagued ...
Structures formed by phospholipids in an aqueous environment: Micelle Structures formed by phospholipids in an aqueous environment: Micelle
Metamorphic Grade "الصخور المتحولة" Metamorphic Grade "الصخور المتحولة"
A police record search of 250 incoming Grade 10 at a Secondary School shows that 26 had been ... A police record search of 250 incoming Grade 10 at a Secondary School shows that 26 had been ...
Video: Body plan of euglena Animation

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