Arturo Martinez watches his wife, Aurora Martinez, put on makeup in their San Rafael, Calif., home. She has Alzheimer's. Lynne Shallcross for NPR hide caption

itoggle caption Lynne Shallcross for NPR

Psychologist Laura Carstensen explains why growing older also means growing happier for so many people. Michael Priest Photography/Courtesy of TED hide caption

itoggle caption Michael Priest Photography/Courtesy of TED

Chef Eric David Corradetti presents dinner to residents at the Bethlehem Woods senior living facility in La Grange Park, Ill. His kitchen emphasizes fresh produce and meats and meals made from scratch. Courtesy of Unidine hide caption

itoggle caption Courtesy of Unidine
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A recent Death over Dinner party in San Francisco. From left: Tim Ferriss, Laura Deming, Luke Nosek, Eric Weinstein, Mason Hartman, and Max Hodak. Lesley McClurg/Capital Public Radio hide caption

itoggle caption Lesley McClurg/Capital Public Radio

Engaging, mentally stimulating work is good for the brain, scientists say, whether you get paid to do it or not. Running a household can be as mentally demanding as running a company. iStockphoto hide caption

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For all the good aspirin can do in preventing second heart attacks and strokes, taking it daily can boost some risks, too — of ulcers, for example, and of bleeding in the brain or gut. iStockphoto hide caption

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Maria Fabrizio for NPR