There is ongoing research into the impact of micronutrients, supplements, and functional foods on diabetes management. This includes, for example, vitamin B3, chromium, magnesium, antioxidants, vitamin D, zinc, caffeine, cinnamon, chili, karela, and methi. However, there is no conclusive evidence that any of these nutrients can prevent or cause diabetes. Many herbal and complementary therapies sold in stores have not been properly tested or regulated in the same way as prescribed medications. If you are using any herbal or complementary remedies, it is essential to consult your healthcare provider and continue following medical advice. The use of supplements may alter the effectiveness of diabetes medications and could worsen complications such as kidney disease.