- American Holistic Health Association (AHHA)www.ahha.org
- Centers for Disease Control and Prevention – Nutrition, Physical Activity, and Obesitywww.cdc.gov
- National Center for Complementary and Integrative Health (NCCIH)www.nccih.nih.gov
- Office of Dietary Supplements (ODS) – NIHwww.ods.od.nih.gov
- The Institute for Functional Medicine (IFM)www.ifm.org
- U.S. Food and Drug Administration – Vitamins and Supplementswww.fda.gov
