Additionally, curcumin regulates the expression of enzymes involved in the biosynthesis of unsaturated fatty acids in mammary stem cells, including stearoyl-CoA desaturase (SCD), fatty acid desaturase 2 (FADS2), and fatty acid desaturase 1 (FADS1), which may serve as potential biomarkers—especially SCD—for assessing the efficacy of curcumin in BC prevention and treatment [70]. This evidence concerns the gene FADS2 and breast cancer.