White kidney bean extract is a common ingredient that is found in weight loss products that claim to be able to block carbohydrates. These carb blockers, when they work, can be helpful in reducing the number of calories that are absorbed from starchy or sugary foods, so that there is a lower chance that they will be stored on the body as fat.
Otherwise known as “Phaseolus vulgaris”, white kidney bean extract can be helpful in cutting back on the amount of carbohydrates that are absorbed by your body. However, it is a very good idea to speak with your doctor before you begin the use of these products because it is possible to experience a number of types of side effects, drug conflicts, and even vitamin deficiencies as a result of their use.
Carbohydrates are one of the main types of food from which Americans receive their calories every day. However, while some types of calories are quickly absorbed, others are taken in much more slowly. It is these slower carbs that are much more friendly to a weight loss diet.
In order to digest carbohydrates, certain enzymes need to be produced by the body, including amylases and glucosidases. These break down carbs within the gastrointestinal tract. However, white kidney bean extract has been shown to contain a substance that stops amylase activity and therefore stops the body from being able to digest as much of the carbohydrates that have been consumed as it normally would.
The Nutrition Journal published a study in 2011 that showed that Phase 2 (a proprietary version of white kidney bean extract), when given to dieters in doses of 500 to 300mg, was able to help to those individuals to lose more weight. In fact, this was the case in ten different clinical studies. Moreover, it was also shown that triglyceride levels fell and blood glucose levels dropped among some of the subjects that were using this substance.
The average weight loss of the study subjects who used white kidney bean extract was 1.4 to 8.7 pounds over various different periods of time.
It is important to note that there are some side effects associated with the use of white kidney bean extract. Due to the slowing of carb digestion and the fact that not all carbohydrates are absorbed from the intestine, bacterial digestion within the colon can lead to flatulence, bloating, and diarrhea.
* Marilyn L Barrett and Jay K Udani. Nutrition Journal.”A proprietary alpha-amylase inhibitor from white bean (Phaseolus vulgaris): A review of clinical studies on weight loss and glycemic control”. Nutr J. 2011; 10: 24. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3071778/?tool=pubmed