Many have experienced acid reflux and for some with extreme cases it can be a cancer risk. Chronic reoccurring acid reflux can cause Barrett’s Esophagus,
http://www.mesotheliomacancernews.com/2010/09/07/new-technology-allows-doctors-to-treat-acid-reflux-now-to-avoid-cancer-later_20100907529.html
New Technology Allows Doctors to Treat Acid Reflux Now to Avoid Cancer Later