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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.