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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.
Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
The familiar sounds of your heart are made by the heart's valves as they open and close.
Medication errors are more common among seriously ill patients than with those with minor conditions.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.