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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.
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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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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
An example of an experiment that supported Beadle and Tatum's one gene
FT-IR experiment
A Possible Problem with the Anger and Concentration Experiment
Find the equation of the normal line to f(x)=sinx+cosx at x = π.
A time map of the genes studied in the experiment
The Lederberg–Zinder experiment using Salmonella