This essential nutrient supports a range of functions and is often grouped with the vitamin B-complex family. As a component of the cell membrane, choline plays a role in cell division and may affect gene expression. The body converts choline into acetylcholine, the most common neurotransmitter in the autonomic nervous system. Studies have shown choline may support the body’s metabolization of fats as well as support muscle function, cardiovascular function, memory, cognition, and enhance detoxification.