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A large new study found that people who lost significant amounts of weight through bariatric surgery gained a striking benefit: Their likelihood of developing cancer fell sharply.
The study, published on Friday in JAMA, followed more than 30,000 adults with obesity for about a decade. It found that those who underwent weight loss surgery had a 32 percent lower risk of developing cancer and a 48 percent lower risk of dying from the disease, compared with a similar group of people who did not have the surgery. On average, the people who had weight loss surgery lost about 55 pounds more than those who did not over the course of the study. The researchers found that the more weight people lost, the more their cancer risk fell.