6 Medical Myths Debunked For Christmas. scientificblogging.December 18, 2008.Are poinsettias toxic? Dr. Vreeman and Dr. Carroll found that the largest study of poinsettia "toxicity" to date involved an analysis of 849,575 plant exposures reported to the American Association of Poison Control Centers. None of the 22,793 poinsettia cases revealed significant poisoning. No one died from poinsettia exposures or ingestions, and more than 96 percent did not even require treatment in a health care facility. [ See full article ]. See also en cnn Relax — Your holiday health concerns may just be myths. (Image fron this page)See abstracts of original paper.