Dietary supplement adulteration - knowledge, attitudes, and practices of California health care professionals: A cross-sectional survey study.

Objective: To assess knowledge, attitudes, and practices surrounding dietary supplements (DS) among California health care professionals (HCPs) and assess factors contributing to the frequency with which HCPs discuss DS with patients.

Methods: In this cross-sectional study, an online questionnaire was distributed to HCPs in California from December 2021-April 2022 via professional membership email listservs.

Results: Among 514 HCPs, overall knowledge of DS did not vary significantly by professional group, and 90% had received little to no DS education.