Cardiologist
Dr Aseem Malhotra found many of the locals in Pioppi in southern Italy
consume very little sugar, despite their high-fat diet.
The villagers rarely suffer from diabetes or heart disease, which he says is down to them eating sugar just once a week.
As
well as diet, other key factors are a lack of stress and getting seven
hours of sleep a night.
Pioppi is protected by UNESCO as the home of the Mediterranean diet.