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In modern life, people consume less copper, the daily intake is only about 0.8 mg, while normal people need 2 mg of copper per day. Therefore, experts suggest that in addition to eating more copper-rich foods such as animal liver, oysters, beans, vegetables, fruits, and oats, you should consciously use more copper tableware in life to supplement the copper element required by the human body. There is also the custom of using copper utensils to treat diseases in the folk, such as rheumatoid arthritis patients wearing copper bracelets and anklets or using copper foot warmers for several months, can reduce or eliminate arthritis symptoms. It is determined that after wearing the copper bracelet, an average of 13 mg is reduced per month, and part of the copper ions is first dissolved in sweat, and then enters the blood circulation through the skin. Entering the liver, it is transported to local inflammatory tissues in the form of anal copper protein, and exerts its specific anti-inflammatory effect. In the past, not much was known about patina, and some even thought it was poisonous. The performance of patina is actually very stable. According to the "Copper Hygiene Report" by Feng Chuan Xingping, a professor of medicine at the University of Tokyo, Japan, patina is insoluble in cold water and hot water, so it will not be absorbed into the body. Copper pots, pots and copper water containers have been used for thousands of years, and no medical report has been received on the damage to human health, which proves that verdigris is non-toxic and harmless to the human body.