Chapter 40: (USA) Upper Limit for copper: 10 mg – another scam This is the official U.S. Government’s recommendation on RDA and upper limits for copper, and a wide array of nutrients, it’s the same 773-page book.https://www.nap.edu/read/10026/chapter/9#248You can download a FREE pdf! (Not that their recommendations are worth anything.) There are a few ostensible “reasons” … Continue reading Chapter 40: (USA) Upper Limit for copper: 10 mg – another scam