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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

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

Major veins of the systemic circulation. Major veins of the systemic circulation.
Examples of thrombophlebitis. Deep venous thrombosis (DVT) commonly affects the veins of the leg. Examples of thrombophlebitis. Deep venous thrombosis (DVT) commonly affects the veins of the leg.
Valves in veins open to permit blood flow, close to prevent backflow. Valves in veins open to permit blood flow, close to prevent backflow.
(B) Locations of major arteries. (B) Locations of major arteries.
(C) Locations of the major veins. (C) Locations of the major veins.
Development of varicose veins. Development of varicose veins.
Video: Metabolic Rate, Heat and Thermoregulation - response to heat and cold stresses

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