Researchers divided 100 obese adults into three groups: alternate-day near-fasting (25 percent of calorie needs on “fast” days; 125 percent of calorie needs on alternating “feast” days); daily calorie restriction (75 percent of calorie needs every day); or no intervention.
After six months, weight loss in both diet groups was the same (about 7 percent of body weight). The same was true after another six months on more-relaxed weight maintenance diets. There were also no significant differences in blood cholesterol, blood pressure, or blood sugar between the two diet groups.
Also see The Fortnight Diet for a new twist—alternating two weeks on a diet and two weeks off.