Sphingomyelin (d18 1/12 0) is a polar lipid with the activity of regulating cell signaling Sphingomyelin (d18 1/12 0) plays an important role in cell membranes affecting membrane fluidity and stability Sphingomyelin (d18 1/12 0) is also involved in lipid metabolism and has the potential to promote neuronal cell growth Sphingomyelin (d18 1/12 0) plays a key role in the function and development of the nervous system