I sometimes see articles referencing potential dangers of high doses of some nutritional supplements. The RDA are minimal potency standards for helping to reduce the risk of deficiency diseases like scurvy, beriberi, pellagra, rickets. With any reasonably balanced diet we rarely see those conditions today. Nutritional science has shown that higher potency supplements - but still within safe ranges - may help fight the risk of degenerative diseases like: heart disease, stroke, cancers, diabetes, and alzheimers. You don't need to take mega-doses to have positive benefits to your health. If you compare the mega-doses that these articles say to avoid against a true science-based supplement manufacturer you can see that the manufacturer's recommended dose is generally far below the potentially harmful mega-doses referenced in the article. Focus on the details and science, not arbitrary generalizations.