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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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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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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
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![A gasoline direct-injection system injects fuel under high pressure directly into the combustion ...](https://biology-forums.com/gallery/30/medium_548020_31_05_17_1_51_44_300162056.png)