Choline Health Dictionary

One of the many constituents of the vitamin B complex. Lack of it in the experimental animal produces a fatty liver. It is found in egg-yolk, liver, and meat. The probable daily human requirement is 500 mg, an amount amply covered by the ordinary diet. Choline can be synthesised by the body (see APPENDIX 5: VITAMINS).

n. a basic compound important in the synthesis of phosphatidylcholine (lecithin) and other *phospholipids and of *acetylcholine. It is also involved in the transport of fat in the body. Choline is sometimes classed as a vitamin but, although it is essential for life, it can be synthesized in the body.