The most authoritative resource available on dietary supplements, natural medicines, and complementary alternative and integrative therapies. Comprehensive medical condition monographs covering background, causes, prevention, treatment, conventional, and integrative therapy options, diets, exercise and nutrition.
Uses grading system for therapies showing the level of scientific support for treating or preventing specific medical conditions.
Data from a longitudinal study. The population is a nationally representative sample of over 20,000 adolescents who were in grades 7-12 during the 1994-95 school year and have been followed for five waves to date, most recently in 2016-18.