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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Everyone has one nostril that is larger than the other.
The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
Asthma cases in Americans are about 75% higher today than they were in 1980.
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.