New research shows that weight-loss surgery can add years to your life if you're obese. A study was done on 4,000 participants in the Swedish Obese Subjects program over more than 20 years, providing life-changing results. Obese people who had bariatric surgery lived, on average, three years longer than obese people who didn't have the surgery, proving that having weight-loss surgery can actually increase your lifespan.

Surgery-related research showed that people's body mass index (BMI) dropped about 11 points in the year after surgery, according to the findings published in U.S. News&World Report. However, it's worth noting that the doctors involved in the study pointed out that while weight-loss surgery extended the lifespan for obese patients, their life expectancy was still about six years shorter than that of an average-weight person. (Related: 100 Unhealthiest Foods on the Planet.)