trim fit keto Facts before considering laparoscopic weight loss surgery. What are the most common procedures for weight loss surgery? There are three generally accepted procedures most commonly used today: laparoscopic isolated gastric bypass, adjustable gastric band, and sleeve. In a “Roux-en-Y” gastric bypass, more than 95 percent of the stomach is “bypassed” and a tiny portion – (only about the size of an egg) remains functional. In an adjustable gastric band procedure, the stomach is restricted or “cinched” by the placement of the band, which can be adjusted after surgery as needed for further weight loss. (This has become the most common procedure being carried Evo Elite Keto out today.)..