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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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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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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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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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There are approximately 3 million unintended pregnancies in the United States each year.
![The proportion of men and women with elevated blood pressure or taking hypertension medication incre](https://biology-forums.com/gallery/47/medium_102911_16_06_15_7_18_43_220301505.jpeg)
![This chart shows the various lines of responsibility and how they differ in presidential and parliam](https://biology-forums.com/gallery/47/medium_262797_12_08_15_1_37_18_221851910.png)