The Bariatric Surgery Conundrum

November 18, 2007 - New York Times

This year, more than 200,000 weight-loss, or bariatric, operations will be performed in the United States, a nearly ten-fold increase in just a decade. The most prominent types are gastric bypass and laparoscopic adjustable gastric banding (or “Lap-Band”), although there are a few others. Each one works a bit differently, but the general aim is to reduce the stomach’s capacity and thereby thwart the appetite. If all goes well, bariatric surgery leads to substantial weight loss, especially among the morbidly obese.

Marc Bessler, director of the Center for Obesity Surgery at New York-Presbyterian/Columbia University Medical Center, is an innovator in the field who personally performs about 200 bariatric operations a year. Because his own father was morbidly obese, Bessler brings a personal zeal to his work. “The whole time I was growing up, he was so overweight he couldn’t play ball with us,” he says. “He died at age 54 from colon cancer. It may have been picked up late because of his obesity.”

Bessler acknowledges that bariatric surgery has a checkered history. “In the past, it killed people, and it didn’t work,” he says. “In the late 1950s and early 1960s, even though it was effective for weight loss, there was lots of complications and mortality. Then in the late ’70s and early ’80s, there were much better surgeries, but they didn’t really work that well. The weight would start coming back.”

Technological innovations, especially the use of laparoscopic procedures, have made for considerable gains in safety and efficacy. While the operation is still dangerous in some circumstances — one study found that for a surgeon’s first 19 bariatric operations, patients were nearly five times as likely to die than patients that the surgeon later operated on — the overall mortality rate is now in the neighborhood of 1 percent.

But even if bariatric surgery doesn’t kill you, there are things to worry about. The operation often produces complications — physiological ones, to be sure, but also perhaps psychological ones. A significant fraction of postbariatric patients acquire new addictions like gambling, smoking, compulsive shopping or alcoholism once they are no longer addicted to eating. In certain cases, some people also learn to outfox the procedure by taking in calories in liquid form (drinking chocolate syrup straight from the can, for instance) or simply drinking and eating at the same time. Surgery is also a lot more expensive than even the most lavish diet, with a Lap-Band procedure costing about $20,000 and a gastric bypass about $30,000.

But Bessler and other bariatric advocates argue that the upsides outweigh the downsides, especially for a morbidly obese patient whose quality of life is already suffering. While asking a bariatric surgeon if bariatric surgery is a good idea might seem akin to asking a barber if you need a haircut — in fact, Bessler does consult for companies in the industry — the data seem to back up his claims: not only do most patients keep off a significant amount of weight but the other medical problems that accompany obesity are also often assuaged. One recent analysis found that 77 percent of bariatric-surgery patients with Type 2 diabetes experienced “complete resolution” of their diabetes after the procedure; the surgery also helps eliminate hypertension and sleep apnea. From an economic standpoint, research suggests that the operation can pay for itself within a few years because a postbariatric patient now requires less medical care and fewer prescriptions. That’s why some insurance companies cover bariatric surgery — as more do, it will likely lead to a further spike in the volume of operations. This is especially good news for the hospitals that have already grown dependent on the significant cash flow that bariatric surgery generates.

There are at least two ways to think about the rise in bariatric surgery. On the one hand, isn’t it terrific that technology has once again solved a perplexing human problem? Now people can eat all they want for years and years and then, at the hands of a talented surgeon, suddenly bid farewell to all their fat. There are risks and expenses of course, but still, isn’t this what progress is all about?

On the other hand, why is such a drastic measure called for? It’s one thing to spend billions of dollars on a disease for which the cause and cure are a mystery. But that’s not the case here. Even those who argue that obesity has a strong genetic component must acknowledge, as Bessler does, that “the amount of obesity has skyrocketed in the past 30 years, but our genetic makeup certainly hasn’t changed in that time.” More >>

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