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Keto works exactly as advertised on the scales. The problem is what it is doing to the machinery underneath.

New data from the University of Utah tested the diet on mice. The results were completely split. The mice on keto successfully avoided the weight gain seen on a standard Western diet. On the outside, they looked leaner.

But inside, their systems were breaking down. The high-fat environment drove fatty liver disease. Blood lipid levels spiked. Most surprisingly, when carbohydrates were reintroduced to their diet, the mice could no longer handle glucose properly. Their pancreatic insulin secretion was impaired.

It is a reminder that short-term weight loss does not equal long-term health. A diet might make you look better in a before-and-after photo, but that means very little if you are quietly overloading the rest of your metabolic circuits to get there.