People who are socially isolated may be at a greater risk of dying sooner, a British study suggests. But do Facebook friends count? How about texting? hide caption

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A towel covers the face of a man in a geriatric day care facility of the German Red Cross at Villa Albrecht in Berlin. Carsten Koall/Getty Images hide caption

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Social worker Nuria Casulleres shows a portrait of Audrey Hepburn to elderly men during a memory activity at the Cuidem La Memoria elderly home in Barcelona, Spain, last August. The home specializes in Alzheimer's patients. David Ramos/Getty Images hide caption

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Extra weight is no defense against aging, says a demographer who argues that the apparent benefits from being overweight are a mirage. hide caption

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Joe Takach comforts his friend Lillian Landry, as she spends her last days in the hospice wing of a hospital in Oakland Park, Fla., in 2009. J. Pat Carter/AP hide caption

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The health services offered in 30 years may not be explicitly covered by the long-term care insurance you buy today. Pamela Moore/ hide caption

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Health researchers say the proportion of people in their late 40s to 60s with diabetes, hypertension or obesity has increased over the past two decades. hide caption

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Some hospices require patients to have a caregiver at home. But for many families, that's just not an option. Guven Demir/iStockphoto hide caption

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Scientists have found that bilingual seniors are better at skills that can fade with age than their monolingual peers. hide caption

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Average life expectancy around the world has ticked up over the past twenty years. Here it's shown for men in 2009. The extremes are in dark green and dark red, which represent 78 to 82 years old and less than 66 years old, respectively. Courtesy of the Institute for Health Metrics and Evaluation hide caption

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Fraud victims are more likely to have opened official-looking sweepstakes notices and other mailings. A new study says the elderly are more susceptible than the young to being swindled. Allen Breed/AP hide caption

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Keith Gresham, 65, lines up four medications he takes at his home in Detroit in 2011. The self-employed painter was without health insurance for about a decade and was happy to finally turn 65 last year so he could qualify for Medicare. Patricia Beck/MCT/Landov hide caption

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