Capsaicin is the active ingredient in chillies. It is what gives chillies the kick or intense heat. Chillies can have a dramatic impact on your health by helping to boost blood circulation and also act as a thinner to help protect against strokes. Chillies also provide pain relief , reduce inflammation, prevents stomach and prostrate cancer. Eating food with chillies every day is all you need to enjoy the multiple and important health benefits they have to offer.