Scottsdale, Arizona - Up to one-third of the population is moderately obese, with a body mass index between 30 and 40. In the summer of 2015, Mayo Clinic doctors were the first in the U.S. to implant a new weight-loss device - an intragastric balloon - for those who need medical help, but don’t qualify for bariatric surgery. As the first results are being assessed, Mayo experts say the balloon has the potential to benefit millions of people.

Here’s Dennis Douda for the Mayo Clinic News Network.