INS and metabolic syndrome: The antioxidant components contained in nuts and coffee, including vitamin E, niacin, potassium and magnesium, fiber, MUFA, PUFA, polyphenols, phytosterols, and other dietary antioxidants suggested its protective role in MetS via the effect on inflammation and oxidative status, endothelial function, insulin resistance, and insulin secretion [14, 17, 32].