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THE QUESTION Does an older woman's weight affect the workings of her brain, including her memory? THIS STUDY analyzed data on 8,745 women, 65 to 79 years old, who were generally in good health and had no evidence of cognitive decline. The women completed standardized tests for mental functioning and had an array of physical measurements recorded, including body mass index (BMI, an indicator of body fatness, based on a person's weight and height)....
THE QUESTION Testosterone supplementation has been shown to build muscle and strength in older men, who often experience a drop in this male hormone. But does it do the same if the men are not fully healthy? THIS STUDY involved 209 men, who averaged 74 years old and had low testosterone levels and mobility problems. High blood pressure, obesity, diabetes, high levels of blood fats and heart disease were also common in the group. They were randomly...
Brent Holland/Getty Images In the days before the London Marathon last year, scientists from the Research Group in Breast Health at the University of Portsmouth in England approached female racers at the event’s registration center and asked them to complete an anonymous questionnaire about their exercise habits and breast health. Gretchen Reynolds on the science of fitness.Marathon,...
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