Cancer Related to Herbs and Dietary Supplements: Online Table of Case Reports. Part 5 of 5

ABSTRACT

A current listing of potentially life-threatening, cancer-related dietary supplements (DSs; includes herbs) based on PubMed case reports was summarized in online tables that can now be updated continually to forewarn United States consumers, clinicians, and DS companies. Documented PubMed case reports were used to create a “Toxic Table” related to cancer (1966 to April 2016, and cross-referencing). Keywords included “herb” or “dietary supplement” combined with “cancer” as well as the specific herb “name” combined with “cancer” and sometimes “toxicity.” Excluded were herb combinations (some exceptions), Chinese herb mixtures, teas of mixed herb contents, fungi (mycotoxins from molds and mushrooms), poisonous plants, self-harm, excessive doses (except vitamins/minerals), legal or illegal drugs, drug–herb interactions, and confounders of drugs or diseases related to cancer. Also included were a few foods related to cancer. Over the past 50+ years, PubMed case reports revealed an increased risk of cancer related to approximately one herb (guang fang ji), no dietary supplements (except those containing guang fang ji or aristolochic acid), and two foods (bracken fern, which is sometimes sold as an herbal supplement, and hot maté). This online “Toxic Table” can now be continually updated to assist researchers and clinicians in preventing serious adverse events from DSs related to cancer.

Keywords:

• Dietary supplement
• herb cancer
• plant extracts

Declaration of interest

Amy Brown is CEO of Natural Remedy Labs, LLC, and has served as an expert witness in herb and dietary supplement cases. The names, formulations, and corporate name and/or ownership of DSs may change, so any identification in this publication may no longer apply.

About the author

Amy C. Brown, PhD, RDN received her doctorate in Human Nutrition and Foods from Virginia Polytechnic Institute & State University. She works at the University of Hawaii's John A. Burns School of Medicine in the Department of Complementary and Alternative Medicine. Her research is in medical nutrition therapy, specifically diet, foods, and plant extracts that may hold therapeutic potential for disease. She has authored over 36 scientific publications, and authored Understanding Food, the best-selling college textbook in its field.