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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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The human body produces and destroys 15 million blood cells every second.

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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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If you could remove all of your skin, it would weigh up to 5 pounds.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

Nuclear division at the DNA level Nuclear division at the DNA level
The structure of skin (a) and epidermis (b) at the microscopic level. The structure of skin (a) and epidermis (b) at the microscopic level.
A warning label on a Honda hybrid warns that a person can be killed due to the high-voltage ... A warning label on a Honda hybrid warns that a person can be killed due to the high-voltage ...
Using the cursors on the oscilloscope, the high- and low-oxygen sensor values can be displayed on ... Using the cursors on the oscilloscope, the high- and low-oxygen sensor values can be displayed on ...
Many U.S. regions under threat due to changes in sea level Many U.S. regions under threat due to changes in sea level
What level of barometric pressure effects body? What level of barometric pressure effects body?
Video: Allergic Rhinitis

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