Phosphatidylcholine is a chemical contained in eggs, soybeans, mustard, sunflower, and other foods. It is found naturally in the body in all cells. Phosphatidylcholine is also a source of choline in the body. Phosphatidylcholine is used for ulcerative colitis. There is some scientific research that supports this use. The body makes a chemical called acetylcholine from phosphatidylcholine. Acetylcholine is important for memory and other functions in the body. Phosphatidylcholine might help to protect the wall of the large intestine in people with a type of inflammatory bowel disease (ulcerative colitis).

It is widely acknowledged that egg yolk lecithin has a good effect on mopping up free radicals and anti-aging capabilities.

Regular dietary supplementation of phospholipids can facilitate the growth and development of an infant's brain. The metabolism of phosphatidylcholine in brain tissue could diminish cognitive decline and biological damage to the brain. The supplementation of egg phosphatidylcholine to mice with dementia increased brain acetylcholine concentration and improved memory.

Choline promotes the function of lowering blood lipid and cholesterol levels, preventing cardiovascular disease, and inhibiting obesity has been illuminated in research as well.