Choline
Essential nutrient for membrane synthesis, methylation, and acetylcholine production. Most people inadequately supply from diet. AI: 425-550mg/day.
How it works (mechanism of action)
Acts on cellular signalling pathways relevant to the documented clinical indications. Contains bioactive compounds with enzyme-modulating, receptor-binding, or antioxidant properties studied in peer-reviewed literature.
Evidence grades: A=Strong RCT evidence · B=Good clinical trials · C=Limited trials · D=Preliminary/traditional
TMAO conversion: choline is major TMAO precursor — gut bacteria convert to TMAO associated with cardiovascular risk at high doses (>500mg/day from supplements). Fishy body odour (trimethylaminuria): choline supplements worsen TMAO-related fish odour syndrome. GI effects at high doses. UL: 3500mg/day adults.
