Slimmers lose twice as much weight on the 5:2 diet as those who try Cavemen style paleo regimes, research suggests.
A study comparing popular modern diets found that fasting regimes - which typically cut calorie intake to around quarter of regular consumption, two days a week - were the most successful.
Over the course of a year, dieters shed an average of nine pounds.
Those on the paleo '' diet - which focuses on heavy consumption of meat - dropped just four pounds. Meanwhile, those on the Mediterranean diet lost six pounds on average, scientists found.
The findings, published in the American Journal of Clinical Nutrition, come from Canadian research on 250 dieters.
Scientists found the Med diet - which encourages consumption of fruit, vegetables, whole-grain breads and cereals, legumes, nuts, seeds and olive oil - was the healthiest regime.
Those on the diet, which severely restricts red meat and limits consumption of fish, chicken, eggs and dairy - saw significant improvements in their blood pressure and glucose levels.
Such changes cut the risk of heart disease and diabetes.
Dieters were also more likely to stay on the diet, with 57 per cent still on it after 12 months.
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Slimmers on 5:2 diet lose twice as much as weight as those trying 'Paleo' - The Telegraph
