lecithin
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Lecithin is a mixture of fatty substances called phospholipids, commonly derived from soybeans, sunflower seeds, or egg yolks. It is used both as a food and supplement ingredient and as a manufacturing aid.
Why it’s used
In supplements it is included as a source of phospholipids and choline, sometimes marketed for liver or cognitive support; in manufacturing it also serves as an emulsifier that helps blend fat- and water-based ingredients together.
What the evidence says
NIH's Office of Dietary Supplements addresses choline broadly, noting choline is an essential nutrient with roles in liver and brain function, but lecithin itself as a standalone supplement for cognitive or liver benefits has limited direct clinical evidence, and most human data concerns choline intake generally rather than lecithin specifically.
Context
Studies examining lecithin or its choline content have used varying gram-level doses of lecithin powder or capsules, but no consistent effective dose for a specific health outcome has been established.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.