India, June 30 -- A new study from South Korea found that women who survived breast cancer had an 8 percent lower risk of developing Alzheimer's disease over an average of 7.3 years.
To reach this conclusion, the researchers looked at health records from over 70,000 women treated for breast cancer and compared them to more than 180,000 women without cancer. They found that fewer breast cancer survivors got Alzheimer's; for every 1,000 women tracked for a year, about 2.45 breast cancer survivors developed Alzheimer's, compared to 2.63 women without cancer.
While the difference is small, it could still matter when looking at large groups or over a longer time. The lower risk was most noticeable in women over 65, likely because Alzheimer's i...