Lecithin is a naturally occurring fatty substance found in various foods and is often extracted from sources such as egg yolks and soybeans. It contains phospholipids, including phosphatidylcholine and phosphatidylethanolamine, which play essential roles in cell structure, metabolism, and signaling within the body. Lecithin is widely used as a dietary supplement and food additive due to its numerous health benefits. One of its primary functions is to aid in the emulsification of fats, allowing them to mix with water-based substances. This property makes lecithin a common ingredient in food products such as chocolate, margarine, and salad dressings, where it helps to prevent separation and improve texture.

In addition to its role as an emulsifier, lecithin is believed to offer several health benefits. It is often touted for its potential to support heart health by helping to lower cholesterol levels and promote cardiovascular function. Lecithin contains choline, a nutrient that is essential for the production of acetylcholine, a neurotransmitter involved in memory and muscle control. As such, lecithin supplementation may support cognitive function and memory recall. Furthermore, lecithin is thought to contribute to liver health by aiding in the breakdown of fats and supporting the detoxification process. Some research suggests that lecithin may also have anti-inflammatory properties and could potentially benefit individuals with certain inflammatory conditions.