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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
The human body produces and destroys 15 million blood cells every second.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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).
Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.