Choline is an unofficial B vitamin that the body can manufacture from lecithin, a structural component of cell walls. It is a precursor for acetylcholine, which functions as a neurotransmitter that is essential for brain function.
Main Functions Choline's main function is to maintain cell membrane integrity. You need it to metabolize fat and keep the liver functioning smoothly. There is some evidence to suggest it may prevent or reduce symptoms of some nervous system diseases including Alzheimer's and Huntington's.
Deficiency Symptoms A deficiency in choline may lead to hemorrhagic kidney disease and liver problems.
Toxicity Symptoms Nausea, vomiting and dizziness may result if consumed in toxic amounts.