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

toggle caption Courtesy of Greg O'Brien

Parents of children who are extremely finicky may find it useful to seek help, psychologists say, because some kids won't outgrow the behavior on their own. But don't make the table a battlefield. Chad Springer/Corbis hide caption

toggle caption Chad Springer/Corbis

In one study, people who were in a buffet line served themselves a lot more of an unhealthful pasta dish if they were next to or behind a person perceived to be overweight. iStockphoto hide caption

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Maria Fabrizio for NPR