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Soya lecithin

What the research shows

Prototype

Conflicting

studies in people disagree or haven’t settled it

3 health findings on this page · See the findings

A yellow-brown fatty substance from soybeans.

It smooths textures, mixes liquids that don't blend, and stops sticking.

Written from English Wikipedia1

  • Vegan
  • Vegetarian

What research says

Studies in people

  • Open question

    Food allergy reactions2

    In children with delayed soya allergy, most reacted to the placebo, not to soya lecithin, though one child had a slight reaction.

  • Benefit

    Blood vessel health3

    In postmenopausal women, soy lecithin improved cholesterol balance but did not clearly change blood vessel function.

  • Concern

    Blood-thinning medicine effect4

    In one woman, soya lecithin seemed to stop her blood-thinning medicine from working properly.

The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least two findings in people. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.

Products

The 6 most-scanned of 63,505 products on Open Food Facts that list soya lecithin.

  • Prince Goût Chocolat au blé complet Mondelez · 300 g 3 additives
  • Nutella nutella · 1 kg 2 additives
  • Nutella Plant-Based Ferrero · 350 g 2 additives
  • Biscuits croquants au coeur onctueux de Nutella® nutella · 304 g 5 additives
  • Chocolate con leche y almendras Maruja · 150 g 1 additive
  • Poulain Poulain · 400 g 1 additive

References

  1. 1Lecithin. Wikipedia. Accessed September 26, 2026.
  2. 2Gholmie Y, Lozinsky AC, Godwin H, et al. Tolerance of soya lecithin in children with non-immunoglobulin E-mediated soya allergy: a randomised, double-blind, cross-over trial. J Hum Nutr Diet. 2020;33(2):232-240. doi:10.1111/jhn.12708
  3. 3Evans M, Njike VY, Hoxley M, Pearson M, Katz DL. Effect of soy isoflavone protein and soy lecithin on endothelial function in healthy postmenopausal women. Menopause. 2007;14(1):141-9. doi:10.1097/01.gme.0000227404.83686.1b
  4. 4Ksouda K, Affes H, Ghorbel A, et al. [Resistance to vitamin K antagonist revealing interaction with soy lecithin]. Ann Cardiol Angeiol (Paris). 2018;67(2):98-100. doi:10.1016/j.ancard.2018.01.002