A new study from the Centers for Disease Control says 40 percent of adults and 19 percent of kids are overweight – both record highs.

Dr. Mona Kennedy, an obesity medicine specialist at New York-Presbyterian Medical Group, says the results make sense. 

"People are going for their lower nutritional value foods because they're busier now, people are more focused on their jobs, they have a busier lifestyle," says Dr. Kennedy. 

Dr. Kennedy says a lack of exercise and sleep are also taking their toll. 

"The difference of one hour [of sleep] on your health and weight is tremendous," she says.