The substance capsaicin which the red chillies their characteristic spiciness may help reduce inflammation in the body. The cayenne in red chillies has shown to have heart protecting benefits in a few studies. On the other hand, the vitamin C in it, can also boost immunity to some extent. They also contain some amounts of beta carotene, very few carbs and a small amount of protein and fibre. The active ingredient allicin present in garlic aids in lowering blood pressure. Garlic is also alleged to help regulate blood glucose levels for diabetics. Garlic is great for the heart and circulatory system. Garlic has an antimicrobial, antiviral and antifungal function and can help in relieving common cold and other viral infections. But, being spicy in nature, it must be taken in moderation to avoid gastric irritation.