A new study reveals people who developed non-melanoma skin cancer were 80 percent less likely to develop Alzheimer’s disease. “When cell division gets out of control, we call that cancer. And when specific populations of brain cells die, we call that Alzheimer’s. If you have an individual with an increased risk of cell division over cell death, that may be linked to a decreased risk of Alzheimer’s. Skin cancer may represent “a marker for a biological process” that protects the body from Alzheimer’s, but acknowledged that “environmental factors may play a role.