Double jeopardy in Alzheimer's families

One parent with Alzheimer's disease is tough enough, but imagine the memory-robbing illness striking both parents - and knowing chances are high you'll get it, too. A study of more than 100 families for the first time gauges the size of that risk. . . . The study, appearing in March's Archives of Neurology, found more than 22 percent of the adult children of 111 couples with Alzheimer's had the disease themselves. Risk grew with age. Among offspring older than 60, more than 30 percent were affected. In those older than 70, nearly 42 percent had the disease.
Prior studies have found a 6 to 13 percent prevalence of the disease in the U.S. population older than 65.