Smoking tobacco more than doubles the risk that Barrett's esophagus will progress to adenocarcinoma or high-grade dysplasia, Dr. Helen G. Coleman and her colleagues wrote in the February issue of Gastroenterology.The study also found that alcohol consumption - despite its known association with esophageal squamous cell carcinoma - was not linked to adenocarcinoma (Gastroenterology 2011 [Epub ahead of print, doi:10.1053/j.gastro.2011.10.034]).Dr. Coleman of Queen's University Belfast, United Kingdom,...