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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.
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.
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.