Today’s Headlines: Alzheimer’s Prevention, Friendship & Genetics, and Prostate Cancer Treatment

Diet and exercise effective in fight against Alzheimer’s: A Swedish study of 1,260 at-risk individuals shows lifestyle changes can help in Alzheimer’s prevention. “Half were randomly assigned to get an intensive lifestyle makeover, with both group and individual nutrition advice, an exercise trainer, and a nurse or physician who made sure they took their medications. In addition, these volunteers benefited from a social support system. The other half received appropriate health care, but not at the intensive level the intervention group did, and without the social support of their fellow participants. After just two years, the group that group that got the lifestyle makeover were in much better shape.” (TIME)

New study shows genetics may help people choose friends: Our friends are as similar to us genetically as you’d expect fourth cousins to be, according to the study published Monday in the Proceedings of the National Academy of Sciences. This means that the number of genetic markers shared by two friends is akin to what would be expected if they had the same great-great-great-grandparents.” (Washington Post)

New study offers evidence against effectiveness of testosterone therapy in treating prostate cancer:Dr. Lu-Yao and her colleagues followed tens of thousands of men with early prostate cancer for as long as 15 years and found that those who received androgen deprivation therapy lived no longer on average than those who did not. The study joins a growing body of evidence indicating that for many men with early prostate cancer, avoiding testosterone-suppressing drugs altogether may be better than grappling with their potentially devastating toll.” (NYT)