Manuel "Manny" Aguirre, 80, has been mixing cocktails at Musso and Frank Grill in Los Angeles for more than two decades. He works part time and could retire — but he doesn't want to. Courtesy of Musso and Frank Grill hide caption

itoggle caption Courtesy of Musso and Frank Grill

Doctors may eventually be able to diagnose "preclinical" Alzheimer's in patients who have abnormal brain scans but who aren't yet showing behavioral symptoms of the disease. iStockphoto hide caption

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House Speaker John Boehner of Ohio leaves the House chamber on Capitol Hill in Washington, after House Republicans passed a measure Friday that would overhaul the system Medicare uses to pay doctors. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

Barbara Mancini with her father, Joseph Yourshaw. Barbara Mancini via Compassion & Choices hide caption

itoggle caption Barbara Mancini via Compassion & Choices

A snippet of the data ProPublica obtained from the federal government about Medicare Part D, the prescription drug benefit for seniors. ProPublica hide caption

itoggle caption ProPublica

Study participants were trained in practical reasoning skills like managing medications. Jorge Salcedo/iStockphoto hide caption

itoggle caption Jorge Salcedo/iStockphoto

What seemed like a burden can become a gift. iStockphoto hide caption

itoggle caption iStockphoto