Another study has linked poor diet to Alzheimer's, at least for mice bred to develop the plaques and tangles in the brain associated with the disease.
Researchers at Laval University in Quebec found that feeding these mice a diet high in fat but low in Omega-3 fats increased the level of the proteins that make up plaques and tangles in the brain. The scientists did not test whether this affected memory or performance in the mice.
Results of mouse studies don’t always hold up when applied to people. But it can't hurt to eat a healthier diet in hopes of preventing Alzheimer’s and other diseases.