Benefits Studies have shown that the Gastric Bypass (Roux-en-Y) has significant results on eliminating or greatly reducing the health problems associated with morbid obesity. Dr. Alan Wittgrove, a bariatric surgeon in California tested 500 patients with conditions listed below prior to surgery and checked them for the conditions at two years post-op. The illustration shows the percentage of health problems completely eliminated at that time. Printable Version - Adobe PDF Format