Researchers conclude that high-calorie foods pose a bigger threat to health and fitness than lack of physical activity, alcohol or smoking. In fact, they go to the point of pinning these carb- and fat-loaded foods as the number one reason for obesity; so yes, it has very little to do with exercise, and a lot to do with diet.
The experts suggest that even if you have a normal BMI, you’re still at the risk of harboring metabolic abnormalities that can lead to obesity, eg: If you have 150 additional calories through sugar, you are at risk of increasing your chances for diabetes by 11-folds.
Interestingly, they also suggest that cutting carbohydrates from your diet can reduce the risk of metabolic syndrome, especially in the case of weight-related diabetes. Carbs get stored as sugar in the body, which makes this a valid conclusion.
Loading up on fats and opting for a low-carb diet will serve fitness enthusiasts and athletes well in the long run. Both these components give you energy, but the only difference is that carbs are a short-term energy source, while fats are in it for the long haul. “Sugar calories promote fat storage and hunger. Fat calories induce fullness or satiation,” conclude experts.
Well, diet does play a bigger role in weight loss (and weight gain), although supplementing it with exercise will help keep you in shape more proportionately. On that note, here are the Dietary Guidelines For Those Who Are Trying To Lose Weight, and here’s what you need to keep in mind When Being Fit Means You Need To Put On The (Right) Kind Of Weight.