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Read answers from our experts: Living Well | Diet & Fitness | Mental Health | Conditions

Legacy of sudden death spurs woman's mission

Touched by tragedy, Holly Morrell urges screening for heart problems. But there are questions about how far to go, to find those at risk of cardiac arrest.

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Extreme diets: Life on 800 calories a day

Very low-calorie diets have been used to help obese patients lose weight for more than two decades. But how safe are they?

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Gaps found in young people's sex knowledge

Most sexually active unmarried young adults believe pregnancy should be planned. Yet about half do not use contraception regularly, according to a new study that highlights the gap between intentions and behavior.

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Neurosurgeon and Chief Medical Correspondent for CNN

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Can depression cause memory loss?

Answers from Dr. Charles Raison »

Can the shingles vaccine prevent a recurrence?

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Get the reporting, research and analysis behind on-air stories straight from the CNN Medical Unit, led by chief medical correspondent Dr. Sanjay Gupta.

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