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Lots of Uncertainty Surveys indicate that the general public is uncertain about whether irradiated meat is truly safe. But their doubts may be based on a lack of knowledge. Bruhn is an expert on irradiation and co-author of a recent statement issued by the American Dietetic Association supporting irradiation. She notes that the American Medical Association, the World Health Organization and many other groups have endorsed meat irradiation as safe and effective. Irradiation is performed by passing the meat through an enclosed chamber and exposing it to an ionizing energy source.