In the context of membrane therapy, we must also mention natural fatty acids with a structure able to interfere with lipid enzymes, such as sterculic acid, a cyclopropane-containing derivative of oleic acid (9,10-methylene-9-octadecenoic acid) found in plants of the genus Sterculia. This is an inhibitor of SCD-1, and of the related cascades, as previously explained, which has attracted interest for application in various diseases, including cancer [174]. Here, SCD is linked to cancer.