Potent Spice Works to Block Growth of Melanoma in Lab Test: “Curcumin, the pungent yellow spice found in both turmeric and curry powders, blocks a key biological pathway needed for development of melanoma and other cancers, say researchers from The University of Texas M. D. Anderson Cancer Center.” So after a discussion with a friend yesterday, I’ll take the curry over the KFC if I’m eating out (Calorie count aside)!