Peppers have an amazing range of health-boosting properties, ranging from weight control to guarding against cancer!
Hot peppers' fire comes from capsaicin, which acts on pain receptors, not taste buds, in our mouths. Capsaicin predominates in the white membranes of peppers, imparting its "heat" to seeds as well. The capsaicin in hot peppers has been shown to decrease blood cholesterol and triglycerides, boost immunity, and reduce the risk of stomach ulcers. Both hot and sweet peppers contain substances that have been shown to increase the body's heat production and oxygen consumption for about 20 minutes after eating. which means your body is burning extra calories, which helps weight loss.
Whether mild or fiery, peppers are nutrient-dense. They're one of the richest sources of vitamins A, C, B6, K, fiber, and folate. Just a cup a day can provide more than 100% of your daily needs, helping to preserve eye sights, fight off infections, support the immune system, lutein and zeaxanthin may slow the development of eye diseases macular degeneration, beta-carotene may help protect against breast cancer in pre-menopausal women, and lycopene may decrease the risk for ovarian cancer.
"What makes peppers hot may also be cool for what ails you". http://www.sciencedaily.com/releases/2003/11/031104064132.htm