One of the biggest crimes in modern American medicine is the amount of unnecessary surgery preformed. Gallbladder operation is the most common operation in North America. Every year, more than half a million people in the United States and more than 50,000 people in Canada undergo surgery to remove their gallbladders because of gallstones. Many of these surgeries are unnecessary. These patients just need to thin out their bile, clean up their diet and eliminate food allergens. Once a gallbladder has been removed, there are things you can do to reduce the consequences.