White kidney bean extract has been used for awhile as a weight loss supplement and to help people curb their eating habits and overall intake of food. Above and beyond the many testimonials that can be found on this website, and others where this incredible healthy bean can be found as working very well, we would not be talking about it or discussing the project here if it did not work. In addition, celebrities are using it and they have plenty of financial resources and means to get their research done and be confident that their doctors will recommend a good product to them.
Here is some additional research about white kidney bean extract, which was originally marketed as Phase 2 and is considered a carb blocker. Also note that products of this nature are scientifically known as phaseolamin products.
In the late 1990s, the first standardized starch or carb blocker, "Phase 2 Carb Controller" (also known as StarchLite), was developed. Phase 2 is a fractionated white kidney bean extract that has been clinically shown in 13 studies to delay the digestion and absorption of starch calories. In 2006, the Food and Drug Administration, based on clinical data and information submitted to the agency, announced that it does not object to weight control and starch reduction claims for Phase 2, and finished dietary supplement products containing the ingredient. With this announcement, Phase 2 became the first nutritional ingredient with two permitted structure/function claims: 1) May assist in weight control when used in conjunction with a sensible diet and exercise, and 2) May reduce the enzymatic digestion of dietary starches. (Source: wikipedia)
If the FDA approves of this supplement to have those claims, and considering the many comments and positive testimonials on the product - the question of "does it work?" can be answered with a resounding YES.