22 Oct 2018 --- The use of dietary supplements among US adults increased 10 percent over the past decade, according to a consumer survey on dietary supplements commissioned by the Council for Responsible Nutrition (CRN) and conducted by Ipsos Public Affairs. The survey found that 75 percent of US adults take dietary supplements, as opposed to just 65 percent in 2009, and 78 percent of those surveyed perceive the dietary supplement industry as being trustworthy.