People whose mom and dad have Alzheimer's run a much higher risk of getting the disease, a new study finds. Researchers at the University of Washington in Seattle looked at 111 families in which both parents have Alzheimer's, and found that 42% of those aged 70 and up got the disease. Only one in 10 develop it in the general population, Reuters reports.
People usually develop Alzheimer's after turning 65, but only a third of those studied had reached 70. "The numbers will be interesting to follow as they get older and older," one researcher said. "I think it confirms that there's a strong genetic component in the disease and that's not a surprise."