Feel free to savor a glass of wine

While too much alcohol is unquestionably harmful to the brain and overall health, studies suggest that light to moderate drinking may lower the risk of dementia. And it may delay the onset of Alzheimer's by two to three years.

One possible reason: Alcohol seems to help blood flow, making it less sticky and less prone to potentially harmful clotting.

Given the risks of alcohol, it's probably not a good idea to start drinking it just for the possible brain benefit. But if you enjoy a glass of wine with dinner, you can continue the habit on the MIND diet.