Obesity, the official peer-reviewed research journal of The Obesity Society, has published the largest weight loss and weight management clinical study to date on Phase 2 white kidney bean extract, an all-natural, non-stimulant proprietary ingredient found in many carbohydrate-blocking nutritional supplements.
In the double-blind study, 123 participants were randomly selected to take Phase 2 white kidney bean extract or a placebo. Participants taking Phase 2 lost an average of 7 pounds at the conclusion of 12 weeks and lost significantly more body fat mass and weight circumference compared to the placebo group. Additionally, 73.5 percent of participants maintained their body weight after 24 weeks and reported decreased desire in sugary food cravings compared to the placebo group, which reported a significant increase in craving sweets. The study is the longest single clinical study conducted on Phase 2 and the first to show benefits from weight management in addition to weight loss.
"This study completely validates a dozen previous Phase 2 studies conducted in the past decade," said Dr. Harry Preuss, a Georgetown University professor in the Departments of Biochemistry, Medicine and Pathology. "This study is unique since most clinical trials don't follow participants for this length of time. The decrease in desire for sweets and increase in overall happiness with participants taking Phase 2 is very interesting data and confirms what we have believed was possible with this specific white kidney bean extract."
Dr. Preuss says the study, conducted in Berlin, was well designed and considered the gold standard of European studies. The weight management portion shows Phase 2 doesn't stop working over time but becomes more effective the longer it is used.
Lead researchers of the study confirm that reduction in body weight from participants using Phase 2 was due to loss of fat mass, not muscle. Improvement in body composition was also documented.
Phase 2 is the only white kidney bean extract backed by numerous clinical studies for efficacy and can be found in nutritional supplements including: Natrol's Carb Intercept, Now Foods' Starch Neutralizer, Swanson's Phase 2 Starch Neutralizer and GNC's Total Lean Phase 2 Carb Controller.