Soy lecithin is a phospholipid derived from soybeans. It is commonly used as an emulsifier and stabilizer in the food industry. However, soy lecithin is also marketed as a health supplement and is believed to have several health benefits. In this article, we review the scientific evidence for soy lecithin’s health benefits and risks.
Health Benefits of Soy Lecithin
Soy lecithin is a beneficial ingredient which provides many health benefits such as:
Lowering Cholesterol
It contains a compound called phosphatidylcholine, which is believed to help lower cholesterol levels. Studies have shown that supplementing with soy lecithin can significantly reduce LDL cholesterol levels, which is the “bad” cholesterol that can lead to heart disease.
Improving Liver Function
It is also believed to support liver function. Studies have shown that supplementing with soy lecithin can improve liver function in individuals with liver disease, including non-alcoholic fatty liver disease.
Cognitive Function
It is a choline source, an essential nutrient for brain function. Studies have shown that choline intake is associated with improved cognitive function, particularly in memory and attention.
Skin Health
It is also believed to have benefits for skin health. It is a linoleic acid source, an essential fatty acid that can improve skin barrier function and hydration.
Potential Risks
Allergic Reactions:
It is derived from soybeans and can cause allergic reactions in individuals with soy allergies. However, allergic reactions to soy lecithin are rare.
Interactions with Medications:
It may interact with certain medications, particularly blood-thinning medications such as warfarin. Individuals taking these medications should consult their healthcare provider before taking soy lecithin supplements.
Heavy Metal Contamination:
Soy lecithin supplements have been found to be contaminated with heavy metals, including lead and cadmium. Individuals should be cautious when purchasing them. They should look for products that have been tested for heavy metal contamination.
It is a widely used emulsifier and stabilizer in the food industry. It is also marketed as a health supplement with potential benefits for lowering cholesterol and improving liver function, cognitive function, and skin health.
However, individuals should know the potential risks of allergic reactions, medication interactions, and heavy metal contamination. As with any supplement, it is recommended to consult a healthcare provider before taking it.
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Citations
- Bernsohn, J., Srinivasan, M., & Abyad, A. (2020). Soy Lecithin. In StatPearls [Internet]. StatPearls Publishing.
- Gaby, A. R. (2006). Nutritional approaches to prevention and treatment of gallstones. Alternative Medicine Review, 11(3), 167-177.
- Kennedy, D. O. (2016). B vitamins and the brain: mechanisms, dose and efficacy—a review. Nutrients, 8(2), 68.
- Ziboh, V. A., & Miller, C. C. (2018). Essential fatty acids and polyunsaturated fatty acids: significance in cutaneous biology. Lipids in Health and Disease, 17(1), 1-11.
