You Can’t Outrun a Bad Diet and This Study Proves It
For years, people have blamed their expanding waistlines on not spending enough time at the gym. But a new study suggests the real problem may be what’s on your plate, not how often you hit the treadmill.
Scientists analyzed the daily calorie burn, body fat percentage, and BMI of more than 4,000 adults from diverse backgrounds, ranging from hunter-gatherers to office workers. Their conclusion? The amount of energy people expend each day is surprisingly similar, regardless of their lifestyle.
So if we’re all burning roughly the same amount of calories, why is obesity still climbing? Researchers say the answer is simple, and it’s sitting in your pantry.
“We’re not gaining weight because we stopped moving. We’re gaining because we’re overfed,” Florida neurosurgeon and longevity expert Dr. Brett Osborn, who wasn’t part of the study but backs its findings, told Fox News Digital.
Published in the journal Proceedings of the National Academy of Sciences, the study revealed that overeating is about 10 times more important than a lack of exercise in fueling the global obesity crisis.
And while exercise is critical for heart health, mental well-being, and longevity, experts warn that counting on it to control weight isn’t realistic.
“Exercise burns far fewer calories than people want to believe,” Osborn said.
Adding to the problem is our growing addiction to ultraprocessed foods—calorie-packed, shelf-stable snacks engineered to override the body’s natural signals of fullness. These foods make it dangerously easy to overeat, experts say, and they’re driving obesity in places that never struggled with it before.
Lindsay Allen, a registered dietitian, pointed out that building muscle and managing stress are also key factors in maintaining a healthy metabolism, but nothing replaces getting your diet in check.
“If you’re worried about excess body fat, focus on calories in,” study authors Amanda McGrosky and Amy Luke advised.
In other words, it’s time to stop blaming the gym and start looking in the kitchen.
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