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The study, published in Obesity, was divided into two parts: weight loss and weight management. During the weight loss part of the trial, 123 overweight or obese people were put on individualized diets based on gender, age, weight, and activity level. The diets were designed to encourage weight loss through slight calorie restriction for 12 weeks. Participants were also assigned to take 1,000 mg of Phaseolus vulgaris extract three times per day or placebo.
During the weight management part of the trial, 49 of the original bean extract users were monitored for an additional 24 weeks while continuing to take the extract. They were told to eat a nutritionally balanced but unrestricted diet.
Researchers found several positive effects:
“We conclude that [Phaseolus vulgaris extract] is effective and safe in weight loss and weight management, even with unrestricted energy intake,” the study’s authors said.
These results suggest that Phaseolus vulgaris extract might increase weight loss while on a low-calorie diet and further suggest that this bean extract might help with the stickiest of problems: maintaining weight loss, but the amount of weight lost and kept off over a total of 36 weeks (9 months) was modest, at 2.9 kg or 6.4 pounds. If you are trying to lose a meaningful amount of weight, a comprehensive program that includes diet, exercise, and supplements may be the best approach.
Here are some things to remember:
(Obesity 2013; doi:10.1002/oby.20577)