Add it To Your Crab or other Seafood dishes, on Top of your Salmon sandwish with Tomatoes and Basillac, or just add it to your Biscottis! That same black pepper that makes you sneeze may help keep you slim. A preliminary new study suggests that the pungent component in black pepper known as piperine fights fat by blocking the formation of new fat cells. If further studies confirm these effects, researchers say black pepper may offer a natural alternative for the treatment of fat-related disorders like obesity. Researchers say the benefits of black pepper and the black pepper plant have been known for centuries in traditional Eastern medicine, in which it is used to treat cholera, diarrhea, and other gastrointestinal issues.