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xii Introduction Still, in the United States, dietary supplements are incredibly popular. Most adults take some form of dietary supplements often they take them every day. A survey commissioned by the nonprofit Council for Responsible Nutrition found that the use of dietary supplements among adults in the United States increased by 10% from 2009 to 2018. In 2009, 65% of the adults took dietary supplements by 2018, that figure was 75%. Seventy-eight percent of American adults aged 55 years or older take dietary supplements 77% of those between the ages of 35 and 54 years take them, as do 69% between the ages of 18 and 34 years. Moreover, consumers appear to have confidence in the dietary supplement industry. Eighty- seven percent of adults have confidence in the “safety, quality, and effectiveness” of their dietary supplements, up from 84% in 2009. In addition, the 2018 survey found that 78% of Americans think the dietary supplement industry is “trustwor- thy.” While the vitamins and minerals dietary supplement category remains the most popular, the use of herbals and botanicals is impressive. Forty-one percent of people who use supplements reported that they had taken herbals or botanicals during the previous 12 months. One such herb, turmeric, was not even on an ear- lier survey, and is now widely used. Acknowledgments Once again, we would like to thank our editor Maxine Taylor, who has edited several of our more recent books. Over the years that we have worked together, Maxine has repeatedly offered excellent suggestions and advice. She is one of the primary reasons that we continue to write books for ABC-CLIO. REFERENCES AND FURTHER READING Council for Responsible Nutrition. www.crnusa.org. National Center for Complementary and Integrative Health. https://nccih.nih.gov. Office of Dietary Supplements, National Institutes of Health. https://ods.od.nih.gov.