Chilli contains up to seven times the vitamin C level of an orange and has a range of health benefits, including fighting sinus congestion, aiding digestion and helping to relieve migraines and muscle, joint and nerve pain. It's also a good source of vitamins A and E, beta-carotene, folic acid and potassium. Chilli has long been used to reduce food micro-contamination and is also considered a potential metabolism booster for weight loss. Several studies have found it may also play a role in treating lung and prostate cancer and leukaemia.