Lecithin is a fatty substance that provides the body with a source of choline or phosphatidylcholine). Choline is an essential nutrient in the B vitamin family and it is incorporated into cell membranes.
Lechithin is also a “building block” for acetylcholine, which is a chemical in the brain that plays a role in memory. Lecithin (and choline) may help treat a variety of gallbladder and liver disorders. For example, lecithin forms part of bile (a substance that digests fat) and as a result, lecithin supplements may prevent the formation of gallstones.