Saponins are a class of chemical compounds found in various plant species, most notably in legumes, quinoa, and certain nightshades like potatoes. They are characterized by their soap-like ability to produce foam when shaken in water. In plants, they serve as a defense against fungi and insects. In the human body, saponins have a 'detergent-like' effect on cell membranes; they can bind to cholesterol molecules in the cell membrane, creating pores that increase the cell's permeability.
While some saponins are studied for their cholesterol-lowering effects, others are known to contribute to 'leaky gut' by damaging the membranes of the cells lining the intestines. This damage facilitates the entry of other harmful substances, like lectins and endotoxins, into the bloodstream. Because of their potential to irritate the gut lining, saponins are often restricted in autoimmune and gut-healing protocols to allow the intestinal mucosa to regenerate.
The definitive guide by Russell Clark, FNP-C, APRN