Researches have found that out of 200 ayurvedic products bought in the United States about a fifth contained lead, mercury or arsenic, sometimes at dangerously high levels. The researchers, who bought these common medicines over the internet, said that the government should establish daily dose limits for toxic metals in dietary supplements and require manufacturers to have their products tested for compliance. Additionally, metals were found in some of the medications described as herbal only. There is a belief of some practitioners that when the preparations are made correctly, the metals cause no harm, but the study questioned the belief. To read the full story, click here.