A systematic review of the global research has found that being overweight increases the risk of developing the most common type of U.S. esophageal cancer. The report also concluded that drinking alcohol increases the risk of the second major type of this cancer.
http://fireisland.edgemedianetwork.com/health_fitness/health/news//202332/major_scientific_report_links_obesity,_alcohol_to_esophageal_cancers
Major Scientific Report Links Obesity, Alcohol to Esophageal Cancers