The RDA (recommended daily allowance) of vitamins and minerals were first published in 1941 based on the minimal amount required to avoid illness; thus 15-30mg daily of Vitamin C prevents scurvy. Since then, various levels have been updated in various years, some not since 1989. There is a move to have the FDA control all supplementation and take vitamins away from general public access. Sometimes I wonder if that might not be a good idea because people do not seem to be doing their due diligence investigating the supplements they take, but instead going on blind faith on the profiteering systems. I see people purchasing what I suspect are poor quality vitamins that simply add to the toxicity of the human system. For instance, many vitamins have toxic additives such as coal tar. If you want to know if yours contains that, you can test it by baking the vitamin for 10 minutes at 250 degrees ( do not do this with a gel cap). If black oozes out, you likely would be better off without that vitamin; this according to Anne Gordon, RN, who wrote the book "How to Strengthen the Immune System."



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