Eating like a caveman could reduce the risk of heart disease, according to new research.
Just three weeks on a stone-age diet rich in lean meat, vegetables, berries and nuts was enough to lower the chances of suffering a heart attack or stroke.
Scientists at the Karolinska Institute in Sweden who tested the diet on a group of volunteers found they lost weight, lowered blood pressure and slashed levels of a blood-thickening agent known to cause deadly clots.
The results, published in the European Journal of Clinical Nutrition, support earlier findings that the so-called paleolithic diet could protect against diabetes.
For centuries, our ancestors lived only on foods that could be speared or picked from trees and plants. Some scientists argue that the modern human body is still genetically programmed for this type of diet. That means no cereals, bread, milk, butter, cheese or sugar but plenty of lean meat, fish, fruits, vegetables and nuts.
To test its effect, the Swedish researchers recruited 20 healthy volunteers and put them on caveman rations for three weeks.