A new study by York University in Canada says that millennials are doomed to have a tougher time losing weight. The study, posted by the Obesity Research and Clinical Practice group, focuses on why it appears to be harder for millennials to lose weight, despite there being about a 120 percent increase in physical activity.

Taking diet and exercise information from the U.S. National Health and Nutrition Survey, researchers were able to deduce that people are exercising more than other generations and have only increased their carb intake by about 14 percent, according to Vocativ.

The study, by Jennifer Kuk, says that those born in the 90s have higher BMIs than those in the 70s and 80s.

"Our study results suggest that if you are 25, you'd have to eat even less and exercise more than those older, to prevent gaining weight," Kuk said. "However, it also indicates there may be other specific changes contributing to the rise in obesity beyond just diet and exercise."

The study could bring new information in the battle against obesity as the research challenges the way we look at weight loss, according to the University Herald.

"...Weight management is actually much more complex than just energy in versus energy out," said Kuk.