What is choline?

Choline is an essential nutrient that plays a role in the synthesis of phospholipid membranes and is a source of methyl groups that are needed for many steps in metabolism. It’s also the precursor to the neurotransmitter acetylcholine. Choline has particular relevance for brain development, liver health, and skeletal muscle function. Choline is mostly found in animal foods such as eggs, milk, fish, chicken, and beef, but some plant foods also contain choline.^[1]