This suggests being consistent with the MIND diet may reduce the risk of HS, dementia and Alzheimer's disease, the authors said. Foods in this diet typically include whole grains, nuts, legumes, berries, vegetables (especially leafy greens), olive oil, poultry and fish.

To find a cure for Alzheimer's disease, we need to understand how and where it gets started, and new research suggests we might be looking in the wrong place. Scientists from the US and Germany have linked genetic risk for Alzheimer's and other brain diseases to the blood-brain barrier – the blood vessels and immune cells that surround and protect the brain.