Choline is an essential nutrient vital for neurotransmitter synthesis (acetylcholine), cell membrane structure, and methyl group donation for processes like DNA methylation. Its role in maintaining cognitive function, liver health, and regulating homocysteine levels makes it a key component for preserving physiological function with age.
Verdict
Ensure adequate dietary intake; supplement if diet is insufficient or for cognitive support.
HEALTHSPAN IMPACT
Moderate
RISK LEVEL
Low
EVIDENCE GRADE
B
MONTHLY COST
$10 - $30
Protocol
- Ensure adequate daily intake of 425 mg (females) to 550 mg (males) through diet or supplements.
- Cognitive support protocols may use 300-1200 mg of Alpha-GPC or 500-2000 mg of CDP-Choline daily, often in divided doses.
Flags
- High intake can be converted by gut bacteria into TMAO, a metabolite controversially linked to cardiovascular disease.
- Exceeding the Tolerable Upper Intake Level of 3.5g/day can cause fishy body odor, GI distress, and hypotension.
- May interact with anticholinergic medications, potentially reducing their effectiveness.
- Individuals with a PEMT gene variant may have higher dietary choline requirements.