Bariatric Surgery Can Help People Keep Weight Off Long Term

Researchers with the Durham Veterans Affairs Medical Center in North Carolina recently tracked the progress of 1,787 veterans who underwent gastric bypass surgery. They found that one year after surgery patients lost 98 pounds on average. Ten years later they gained back only about 7 pounds.

Earlier studies have tracked gastric bypass patients for relatively short periods of time, about 1 to 3 years. That has led to the assumption that most people who have gastric bypass surgery will eventually regain the weight.

This study, published online on August 31 in JAMA Surgery, is one of the largest and longest to evaluate the surgery’s effects on weight loss. It also did a better job than many studies at follow-up, with 82 percent of participants staying in the study for 10 years.

Researcher Matthew Maciejewski at the Duke University School of Medicine collaborated with Dr. David Arterburn, a senior investigator at Group Health Research Institute in Seattle, in analyzing the data. They expected to see gradual weight gain over 10 years, with some patients gaining back everything they lost.

But they were pleasantly surprised. Patients regained a small amount of weight in the first few years after surgery, but then they “actually plateaued and maintained their weight loss and even lost a little more weight over the next few years,” says Arterburn. Just 3 percent of the study participants gained most or all of the weight back in 10 years.

He says the surgery likely interferes with the body’s natural defense to less food: a slowdown in metabolism. This is what dooms so many dieters. The study compared the 1,787 veterans who had the surgery to 5,305 equally obese patients who did not have surgery. For the nonsurgical patients, their weight after 10 years essentially stayed the same.

Arterburn says bariatric surgery seems to change how the brain perceives hunger. “Even though they’re taking in a whole lot less calories than they were before, they don’t feel a constant urge to eat, and it’s not just a reduction in the size of the stomach. They don’t feel hungry in between meals.”

This is exactly what happened to Terry White, who is now 67. He no longer falls asleep all the time. He walks and jogs about 5 miles daily. He and his wife Wanda are planning to charter a boat in the West Indies to celebrate their upcoming 50thanniversary. He says it’s been an “unreal” and extraordinary change in his quality of life.

Researcher Maciejewski says the findings of the study provide evidence that bariatric surgery can be highly effective for severely obese patients. He says further research is needed to look at postsurgical complications and how the experience affects long term mental health.

Source :- NPR

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