Much like soy lecithin, it really isnât the end of the world if you get a little processed lecithin in your dark chocolate â the benefits outweigh the harm â but itâs not something you should consume excessively.t is also used as a healthy supplement due to its high concentration of choline (also found in eggs and liver). It is found naturally in sunflower seeds, and lecithin itself is found naturally in the body (including the brain!).