“lecithin?”Here!
Hasn’t appeared in a scanned product yet.
In personal care
A mixture of fatty substances called phospholipids, most often extracted from soybeans, sunflower seeds, or egg yolks.
Why it’s used
Works as an emulsifier, helping oil and water stay mixed, and also lends a conditioning feel to skin and hair products.
What the evidence says
We haven’t found a source for this one that you can open and check, so we’re not summarizing the evidence.
Look it up yourself
We would rather point you at the shelf than summarize something you can’t check. These are the same places we search:
- PubChem — what the substance is, chemically — names, synonyms and structure
- PubMed — every paper indexed by the US National Library of Medicine that names it
These are starting points, not our findings — we haven’t run them for you. A substance whose name is also an ordinary word (“Heart”, “Alanine”, “Water”) will return papers that are not about the ingredient at all.
Rumors
Lecithin penetrates the skin and carries other ingredients deeper, increasing how well they absorb and work.
We haven’t checked the evidence on this one yet.
What was measured is not yet noted.
Who’s saying this
- The Pink Foundry — a brand: sells pharma quality skincare
How we know who this is
- “The Pink Foundry offers Pharma Quality Skincare.” (their page)
- The Pink Foundry — a brand: sells pharma quality skincare
Lecithin moisturises skin and strengthens the skin's protective barrier, preventing water loss.
We haven’t checked the evidence on this one yet.
What was measured is not yet noted.
Who’s saying this
- The Pink Foundry — a brand: sells pharma quality skincare
How we know who this is
- “The Pink Foundry offers Pharma Quality Skincare.” (their page)
- The Pink Foundry — a brand: sells pharma quality skincare
Lecithin in cosmetics (usually soy-derived) can trigger allergic skin reactions such as rashes, hives and eczema flares in people with soy allergy.
We haven’t checked the evidence on this one yet.
What was measured is not yet noted.
Who’s saying this
- epilynx.com — we haven’t checked who runs this site yet
Lecithin in hair care reverses signs of hair aging and helps dry, brittle hair.
We haven’t checked the evidence on this one yet.
What was measured is not yet noted.
Who’s saying this
- schwarzkopf.ca — we haven’t checked who runs this site yet
Lecithin heals wounds, scars and skin damage.
We haven’t checked the evidence on this one yet.
What was measured is not yet noted.
Who’s saying this
- The Pink Foundry — a brand: sells pharma quality skincare
How we know who this is
- “The Pink Foundry offers Pharma Quality Skincare.” (their page)
- The Pink Foundry — a brand: sells pharma quality skincare
As a supplement
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
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.
Rumors
Soy lecithin should be avoided because it is genetically modified and extracted with chemical solvents like hexane.
Not gradedhealth and safety evidence
Sources cited — no verdict reached.
What was measured is not yet noted.
- Lecithin – de-oiled Handling/Processing Technical Evaluation Report (Regulatory) · Funded by USDA National Organic Program (compiled by the Organic Materials Review Institute, OMRI) (government)
Who’s saying this
- John’s Killer Protein® — a brand: sells grass-fed whey and casein protein blends
How we know who this is
- “We created John’s Killer Protein® because we believe that true health is based on proper and wholesome nutrition, without any added sugars, seed oils, sweeteners or artificial ingredients.” (their page)
- “Our whey and casein protein blends are cold filtered from truly grass-fed dairy, unsweetened, made with organic ingredients, always non-GMO, rBST/rBGH free, low to no lactose, gluten & soy-free.” (their page)
High doses of lecithin cause diarrhea or loose stools, including in nursing babies.
Not gradedhealth and safety evidence
Sources cited — no verdict reached.
What was measured is not yet noted.
- Re-evaluation of lecithins (E 322) as a food additive (Regulatory) · Funding not checked
- Lecithin (Regulatory) · Funding not checked
Who’s saying this
- milky-mama.com — we haven’t checked who runs this site yet
Lecithin improves memory and brain function and helps prevent dementia and Alzheimer's disease.
Does not support — suggestivehealth and safety evidence
Studied in: patients with dementia (Alzheimer's disease and Parkinsonian dementia).
Measured as an outcome.
- Lecithin for dementia and cognitive impairment (Peer-reviewed) · Funded by Medical Research Council, UK (external); Institute of Child Health, Imperial College School of Medicine, University of Reading (internal) (government)
Who’s saying this
- WholeFoods Magazine — a publisher: B2B natural products trade media; run by Wainer's Finest Communications
How we know who this is
- “WholeFoods Magazine is a full-service media company run by Wainer’s Finest Communications.” (their page)
Lecithin supplements prevent and clear clogged (plugged) milk ducts in breastfeeding mothers.
Not gradedhealth and safety evidence
Sources cited — no verdict reached.
What was measured is not yet noted.
- Lecithin (Regulatory) · Funding not checked
Who’s saying this
- milky-mama.com — we haven’t checked who runs this site yet
Lecithin lowers LDL (bad) cholesterol and raises HDL (good) cholesterol.
Not gradedhealth and safety evidence
No sources cited yet.
What was measured is not yet noted.
- Lecithin and cardiovascular health: a comprehensive review (Peer-reviewed) · Funding not clearly stated · No conflicts declared
Who’s saying this
- Healthline — a publisher: health information publisher; part of RVO Health, backed by Red Ventures and UnitedHealth Group's Optum
How we know who this is
- “Healthline is a digital publisher and does not offer personal health or medical advice.” (their page)
- “Healthline is part of RVO Health, a company backed by Red Ventures and UnitedHealth Group’s Optum.” (their page)