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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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There are more nerve cells in one human brain than there are stars in the Milky Way.