Women with mild cognitive impairment, which can be a precursor to Alzheimer's, tend to decline faster than men. Lizzie Roberts/Getty Images/Ikon Images hide caption

itoggle caption Lizzie Roberts/Getty Images/Ikon Images

For 3-D food printers, chocolate is a good material to start with, because it's fairly simple to make it liquid inside the printer cartridge and solid once it drops out. Courtesy of Smart Gastronomy Lab, University of Liège hide caption

itoggle caption Courtesy of Smart Gastronomy Lab, University of Liège

Proposed federal rules would aim to minimize the use of antipsychotic drugs and increase training for nurses in dementia care. Jiri Hubatka/imageBroker/Corbis hide caption

itoggle caption Jiri Hubatka/imageBroker/Corbis

The varicella zoster virus causes chickenpox in children, then lurks in the body for years and can cause painful shingles later in life. James Cavallini/Science Source hide caption

itoggle caption James Cavallini/Science Source

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

A whole range of foods in common in the Mediterranean diet — from fish to nuts to fruits and vegetables — are rich in antioxidants and may protect against cognitive decline. iStockphoto hide caption

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Maria Fabrizio for NPR

Jeralean Talley addresses the congregation as her pastor, Reverend Dana Darby, holds the microphone for her during a celebration of her 115th birthday. Rebecca Cook/Reuters /Landov hide caption

itoggle caption Rebecca Cook/Reuters /Landov

Caregivers who are trained in responding to anxiety or aggression in people with dementia can effectively reduce those symptoms, studies find. iStockphoto hide caption

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iStockphoto

Residents of ShantiNiketan, a retirement community near Orlando, Fla., walk in a Hindu religious procession. Courtesy of ShantiNiketan Inc. hide caption

itoggle caption Courtesy of ShantiNiketan Inc.

Barbara Beskind, 90, is a designer at IDEO who works with engineers on products that improve the quality of life for older people. Nicolas Zurcher/Courtesy of IDEO hide caption

itoggle caption Nicolas Zurcher/Courtesy of IDEO

Palliative medicine physician Michael Fratkin gets off a plane after visiting a patient on the Hoopa Valley Indian Reservation. He's recently launched a startup to support this kind of work. April Dembosky/KQED hide caption

itoggle caption April Dembosky/KQED