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To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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There are 60,000 miles of blood vessels in every adult human.
![Atherosclerosis. (a) A sectioned coronary artery that exhibits an accumulation of fatty plaque, whic](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_14_25_100211581.jpeg)
![Incentive spirometry. A portable incentive spirometer is useful for encouraging patients to exercise](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_25_45_100622042.jpeg)