Chapter 39: (USA) Recommended Daily Allowance (RDA) for copper: 0.9 mg – a scam 1993 version:The US Government has a large volume reference book on vitamins and minerals: Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinchttps://www.nap.edu/download/10026 –free to download. 1993 version? We … Continue reading Chapter 39: (USA) Recommended Daily Allowance (RDA) for copper: 0.9 mg – a scam