Lecithin is an important component of all cells in the body and aids in the metabolism of fats, allowing them to be used by the cells of the body. Blackmores Lecithin 1200 is derived from soya beans. Lecithin is a natural constituent of every cell of the human body. With other lipids, lecithin is important for maintaining the structural integrity of cell membranes, which regulate the passage of nutrients into and out of the cells. As part of the cell membrane it facilitates communication between the cells, which is important for cell growth, regulation and function.