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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
The human body produces and destroys 15 million blood cells every second.