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Life expectancy is now at a record 77.6 years, nearly double what was possible at the beginning of the last century. But are Americans necessarily living healthier lives? FULL STORY
• 100-year-old: Try cold showers for long life
• CNN Access: Dr. Andrew Weil on living longer, better • Gallery: Mind/body exercise | Gallery: Secrets to long life • Gallery: Medical checklist | Explainer: Changes by decade • Gallery: Healthy holiday eating | Health Library  
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