
Forget everything you thought about proper nutrition: The American government is turning the pyramid upside down, and instead of carbohydrates and grains, it is giving the green light to steaks and butter. This revolution is now receiving a surprising boost from a huge study in Sweden, which links fatty cheeses to brain sharpness and the prevention of dementia. So is fat the new hero of the kitchen? Sivan Alkalek Mounir set out to find out.