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Just one day of fatty cheat foods could mess with your insulin production

Men's Fitness logo Men's Fitness 9/13/2017 Adam Bible

Binging on food—whether during a Sunday football showdown or during the holidays with the family—is never a great idea. Even if you try to offset the occasional burger splurge with some follow-up exercise or extra attention to the crudité plate, there's no denying that a fatty food bomb can leave you feeling pretty awful.

And, as it turns out, even a single cheat day's worth of pigging out on pizza or sausage dip may be harming our body more than we thought, a new study has shown.

Man Eating Slice of Pizza © AMI Man Eating Slice of Pizza

In a small study at Loughborough University in the U.K., researchers fed 15 healthy, young adults—nonsmokers, physically active, and free of cardiovascular disease or diabetes—a diet packed with greasy stuff like sausages, bacon, cheese, burgers, and cheesecake for one day. They then gave the participants a sugary drink followed by an oral glucose tolerance test.

The finding? After eating all that fat, the participants' bodies were substantially worse at handling sugar, which is linked to a reduction in insulin sensitivity.

“Our pilot data suggests that a single day of high-fat overfeeding is sufficient to impair whole-body insulin sensitivity in young, healthy individuals,” said Siôn Parry, a doctoral candidate at the Loughborough University School of Sport, Exercise and Health Sciences. “This may have implications for those with binge-eating disorders, or those who overeat during holiday periods or at times of celebration…We also do not know how long the negative effects of this diet last, or whether repeated periods of short-term, high-fat overfeeding leads to a progressive worsening of glycemic control.”

Bottom line: Even if you're ready to go on a high-fat keto diet, be sure to prioritize healthy fats that won't hammer your system quite as hard.

Gallery: 20 foods an athlete would never eat  1. Diet Soda: <p>Athletes see each meal as an opportunity to refuel: How much protein can I fit into this meal? How can I add more good fats? It’s what drives performance. Nutritionally void foods like artificial sweeteners have no place in their diet. Not only do they offer no health benefits, but consuming artificially sweetened foods like a can of diet soda per day could significantly increase your risk for health problems and weight gain, according to a Purdue University study. Artificial sweeteners trick the body into thinking you're consuming real food, and because they’re over 100 times sweeter than the real thing, your body starts producing insulin (the fat storage hormone). You’re better off consuming the real stuff in moderation.</p><p><a href="">DOWNLOAD The 21-Day Shred app</a> for iOS to get the full training program, diet, and more. No iOS? No problem. <a href="">Get a COPY of the PDF</a>.</p> 20 foods an athlete would never eat


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