The phrase "white kidney" refers to a type of kidney bean that is light in color. It does not indicate anything about the health or condition of the kidney organ in our body. Full definition
An extract of white kidney beans is believed to reduce the carbohydrate absorption rate and helps you conquer your desire for food ingestion. (wisejug.com)
I also used white kidney beans instead of chick peas, and added some red kale, which adds some extra fibre. (crumbtopbaking.com)
One common claim is that of white kidney bean extract. (carbscout.com)