It’s always good when science confirms common sense (although we should be able to do without it!). According to a new study eating a healthy diet, getting regular physical activity, and maintaining a normal weight appear to reduce protein buildups in the brain associated with Alzheimer’s disease. These lifestyle factors are already recommended for safeguarding against dementia and have previously been shown to reduce shrinkage and atrophy of the brain. It’s been estimated that up to half of Alzheimer’s cases can be attributed to modifiable risk factors such as low education, smoking, physical inactivity, and obesity.