As we age, our muscles deteriorate, and they don't repair as quickly as they used to. But the good news is that exercise and weightlifting can still make muscles stronger. Al Bello/Getty Images hide caption

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Why We Gain Weight As We Age

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Study: Mediterranean Diet May Lower Stroke Risk

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A weakening immune system makes inoculations both more important and less effective for the elderly. But scientists can "trick" the immune system into a younger response by adding a little extra oomph to vaccines for older people via chemicals called adjuvants or larger doses of the vaccines. Nick Ut/AP hide caption

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Adapting Vaccines For Our Aging Immune Systems

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Many schools have made an effort to get rid of unhealthy snacks and educate students about nutrition. Elementary students in Gilbert, Ariz., check out the fruit and vegetable choices as a part of a school lunch program called "A to Z Salad Bar." Tim Hacker/AP/East Valley Tribune hide caption

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Obesity Rates Level Off, But Health Concerns Remain

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For Some, Lasik Brings More Problems Than Solutions

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Health Experts Call For Heart Checkups For Kids

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FDA Investigates Radiation Overdose At Hospitals

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Report: Cancer Deaths Declining Since 1990s

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To Help Healing, Doctors Pay More Attention To Pain

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Study Clears Most Antibiotic Use In Pregnant Women

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FDA Eyes Nutritional Claims On Packages

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Report: Students Need More Veggies, Fewer Calories

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