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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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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.
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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Structure and basic function of a typical vertebrate neuron and associated glial cells.
X-ray showing typical joint changes associated with osteoarthritis.
A mother dies, a father loses his leg—such calamities shattered poor urban families. Orphaned street
A typical joint.
A typical large tool box, showing just one of many drawers.
A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ...