In chili contains Capsaicin, an antioxidant that hampers food spoilage and can protect blood vessels. This substance has created the taste when eating chili. Studies show that capsaicin increases the body's metabolic rate and can stimulate the brain to help us feel less hungry.
In a 2005 study in the International Journal of Obesity, people who ate less than 16% of their calories at a meal if they took a sip of tomato juice with chili (compared to tomato juice) usual) half an hour before eating.