[A] report, believed to be the first to provide an estimate of peanut allergy in adults, suggests that at least 4.5 million adults in the U.S. are impacted by the allergy.; "Given the high prevalence of peanut allergy among U.S. adults, additional therapies are needed to help address this growing burden of disease," Dr. Ruchi Gupta, study author and professor of pediatrics at Northwestern University Feinberg School of Medicine and a physician at Ann & Robert H. Lurie Children's Hospital of Chicago, said in the Eurekalert.org news release.