Success from bariatric surgery Patients may lose 30 to 50 percent of their excess weight in the first six months, and 77 percent of excess weight as early as 12 months after surgery. Another study showed that patients could maintain a 50 to 60 percent loss of excess weight 10 to 14 years after surgery.

What percentage of people keep weight off after bariatric surgery?

In a recent prospective, long-term study of patients who had undergone RYGB, 93 percent of patients maintained at least a 10 percent weight loss from base line, 70 percent maintained at least a 20 percent weight loss and only 40 percent maintained at least a 30 percent weight loss after 12 years.

Is bariatric surgery the most successful?

Currently, bariatric surgery is the most effective treatment for severe obesity and its metabolic complications; however, 15–35% of the patients that undergo bariatric surgery do not reach their goal for weight loss.