Carnosol, a novel agonist of TRPA1 with an EC50 value of 12.46 uM, which exhibits anti-inflammatory, anti-nociceptive, hepatoprotective, antioxidant, anticarcinogen, anti-angiogenic, anti- invasive and antimetastatic properties. Carnosol can cause a significant decrease in both bacterial and yeast growth whilst, it may prove useful as a food antioxidant which could also contribute to the retardation of the microbial spoilage of foods; it also can inhibit adipocyte differentiation in mouse 3T3-L1 cells through induction of phase2 enzymes and activation of glutathione metabolism, it may be a potential drug against obesity-related diseases.