Experts hope calling it a disease will help everyone understand the impact.
"I'm very excited they've finally taken action and done that. Personally, I feel they're maybe a little behind. I think people who work in this profession and deal with obese people on a regular basis have considered it a disease for quite a while," said Jenni Klufa with Sky Fitness and Wellbeing.
The CDC says obese people spend $1,400 more each year on medical bills than those of normal weight.