Black food contains a lot of trace elements and vitamins, such as Va, β-carotene, Vpp (nicotinic acid) and so on. , as well as elements such as selenium and iron that are necessary for the human body but not easy to obtain. Melanin in black food is called "anthocyanin", which has strong antioxidant effect, and has the effects of balancing endocrine, preventing premature aging, tonifying kidney, warming body, blackening hair and beautifying face. Experts remind us to eat more black food, such as black rice, black dates, black beans, black sesame seeds, black fungus, black buckwheat, laver, cocoa, etc., to promote blood circulation.