Cancer survivors have lower risk for Alzheimer's, study shows

Fighting cancer may also help patients fight Alzheimer’s disease, a new study suggests.
Researchers at the VA Boston Healthcare System found that veterans with all types of cancer had a reduced risk for later developing Alzheimer’s disease.
Survivors of liver cancer had the lowest risk: 51 percent. Other cancers had reduced risk, including pancreas (44 percent), esophagus (33 percent), leukemia (31 percent), lung (25 percent) and kidney (22 percent).
http://www.king5.com/health/Alzheimers-cancer-study-215567901.html