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The familiar sounds of your heart are made by the heart's valves as they open and close.
Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
The average office desk has 400 times more bacteria on it than a toilet.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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.