Cocoa could help stave off cognitive decline

US researchers recruited 60 people without dementia over the age of 73.

They drank two cups of hot cocoa per day for 30 days (either high or low in the antioxidant flavanol) and underwent ultrasounds measuring blood flow to the brain as well as undertaking thinking skills tests to measure neurovascular coupling (NVC).

NVC, or functional hyperaemia, is the close functional and spatial relationship between neuronal activity and cerebral blood flow.

While 18 of the