The story provided no cost estimates for vitamin and mineral supplements. The magnitude of wasted expenditures that could be saved is relevant. The story indicated that there was no cancer risk reduction associated with the vitamin supplements studied. A quote in the story from the author of one of the studies indicated that too little or too much of particular vitamins was associated with increased cancer risk. In addition, the table in the story provided information about vitamins being associated with an increased risk of diabetes and a higher, though not significant increase in the incidence in the case of one cancer. The story did not convey any sense of the quality of the studies on which it was reporting. Were they retrospective observational studies (generally weak designs) or prospective randomized trials (the best type of study). A more insightful explanation about why the current group of studies which find no protective effect are more compelling that the previous studies that found a protective effect of vitamins would have also been useful.. This story did not engage in disease mongering. The story included quotes from one of the study authors, as well as a spokesperson from the American Cancer Society and an expert without connection to the study but who wrote an editorial accompanying the study. The story mentions specific lifestyle interventions which have been shown to be associated with reduction in cancer risk. It inaccurately mentioned screening for colon, cervical, and breast cancer as means of reducing their risk. It should have stated that these screening tests are associated with reduced risk of dying of these cancers, not as means of reducing the chance of developing them. It’s clear that vitamins and mineral supplements are in widespread use. The story correctly indicated that the results of the current study are consistent with the results from several recent studies which demonstrated that vitamin supplementation failed to decrease the chance of developing cancer. The sidebar table, which summarized results and included the journal name and month of publication, provided a resource for interested readers to find more information. Does not appear to rely on a press release.
Vitamins get ‘F’ in cancer prevention