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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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).