What does choline mean?
Choline is a water-soluble compound that the human body requires for fundamental processes, yet it is often grouped loosely with the B vitamins despite not being officially classified as one. It serves several vital roles: it helps build cell membranes through its contribution to phosphatidylcholine, supports liver function and fat metabolism, and provides the raw material for synthesizing acetylcholine, a neurotransmitter central to memory and muscle control. Because the liver produces only limited amounts, people must obtain sufficient choline from foods such as eggs, liver, beef, fish, and soybeans. Inadequate intake can contribute to liver damage and, during pregnancy, may affect fetal brain development. The word appears mainly in nutritional, medical, and biochemical writing, typically in phrases about dietary intake, deficiency, or supplementation. Its recognition as an essential nutrient came relatively recently, which has made it a subject of growing public-health interest.
nounA water-soluble compound that functions as an essential nutrient in the human body, important for liver function, lipid metabolism, and the synthesis of the neurotransmitter acetylcholine.
- The organic compound (chemical formula C5H14NO+) classified as an essential nutrient, involved in cell membrane structure, liver function, and neurotransmitter synthesis.
"Eggs are one of the richest dietary sources of choline."
"Pregnant women are often advised to monitor their choline intake because of its role in fetal brain development."
"The supplement contains choline bitartrate, a common form used to support cognitive health."
Rarely used in the plural; the singular uncountable form covers nearly all real-world usage. The plural appears only in technical chemistry contexts referring to distinct choline compounds or salts.
"The study compared the effects of several different cholines on memory performance in mice."
Choline was only recognized as an essential nutrient in 1998 — making it one of the newest official nutrients, even though your body can barely function without it.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of choline
Choline was first isolated in the mid-nineteenth century, and its name derives from the Greek word 'cholē,' meaning bile, reflecting its early association with bile and animal tissue. The same Greek root gives us related scientific terms such as 'cholesterol' and 'cholera,' as well as older words like 'choler.' The suffix '-ine' was the standard ending for naming newly discovered organic bases at the time. Its adjective form, 'cholinergic,' emerged in the twentieth century within physiology to describe nerve cells and receptors responsive to acetylcholine.
Related word forms
How choline is actually used
Choline is a technical term used primarily in nutrition science, medicine, biochemistry, and health journalism. It carries no informal register or figurative use. In everyday contexts it appears most often in discussions of diet, supplements, and prenatal health.
Easily confused with choline
Chlorine is a toxic greenish-yellow gaseous chemical element used to disinfect water, whereas choline is a nutrient compound found in foods like eggs and liver.