Dr. Oz Shares How Peppers Help Relieve Sinus Congestion

Capsaicin: Found in hot peppers (including chilis and cayenne powder), capsaicin has been shown to boost metabolism as well as suppress appetite, at least slightly. Over time, this effect might give you an extra edge when it comes to weight loss. But it won’t melt the pounds away.
Research shows that people who don’t typically eat spicy foods are most likely to benefit from turning the heat up a notch. Capsaicin seems to affect metabolism by raising body temperature, which uses up more energy.
https://www.webmd.com/diet/peppers-health-benefits