• It is needed for the synthesis of acetylcholine, a neurotransmitter, and lecithin, the phospholipid. • acetylcholine = a neurotransmitter associated with attention, learning and memory, muscle control, and many other functions. • Average RDA: 425 mg/day (women) 550 mg/day(men) Keeps the healthy function of our brain & nervous system. helps form the membranes of our cells. help our muscles counteract. helps the transport of fats & cholesterol in the body. Balances levels of hemocysteine in the blood.