Debbie Ziegler holds a photo of her late daughter, Brittany Maynard, after the California State Assembly approved a right-to-die measure on Sept. 9. Maynard died on Nov. 1, 2014. Rich Pedroncelli/AP hide caption

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A girl looks away from the body of an assassinated man, who was killed by a gang member in San Salvador. Encarni Pindado for NPR hide caption

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"My brain used to be my best friend," says Greg O'Brien, a journalist with early onset Alzheimer's. But he can't trust it anymore, he says. Alzheimer's is, in some ways, changing who he is. Amanda Kowalski and Samantha Broun for NPR hide caption

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President Barack Obama signs the Clay Hunt Suicide Prevention for American Veterans Act, named for a Marine Corps combat veteran who struggled with post-traumatic stress disorder after serving in Iraq and Afghanistan and who killed himself in March 2011 at the age of 28. The bill calls for evaluation and expansion of existing Veterans Affairs mental health and suicide prevention programs. J. Scott Applewhite/AP hide caption

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The large British study, begun in 1958, tracked the diet, habits and emotional and physical health of thousands of people from childhood through midlife. iStockphoto hide caption

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Practicing resuscitation techniques on a mannequin is just the start of trauma training at the University of Virginia Medical Center in Charlottesville. Workers there also learn to take a moment together after every patient's death to silently reflect. Kara Lofton/WMRA hide caption

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Michael Doucleff Sr. (right) talks to a longtime customer at Duke Bakery in Alton, Ill. Dan Brannan/Courtesy of hide caption

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People who have easy access to firearms are about three times more likely to kill themselves than people who don't have access to guns, a recent study from the University of California, San Francisco indicates. iStockphoto hide caption

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Doris Keene (right) talks with her acupuncturist before a treatment at Portland's Quest Center for Integrative Health. Keene says the treatments have eased her chronic back pain at least as effectively as the Vicodin and muscle relaxants she once relied on. Kristian Foden-Vencil/Oregon Public Broadcasting hide caption

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Six years after he was diagnosed with early onset Alzheimer's disease, Greg O'Brien is thinking differently about the future. Even as he fights to hold on to his memory, he and his wife, Mary Catherine, are discussing how to let go. Courtesy of Greg O'Brien hide caption

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No gambling here: When asked to weigh financial choices, teenagers were more likely to make careful choices than were young adults. David Chestnutt/Ikon Images/Corbis hide caption

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The parts of the brain known to help process fear and negative emotion are hyperactive when someone with math anxiety confronts a tricky problem, scientists say. iStockphoto hide caption

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