Study Reveals Unexpected Link Between Diet and Physical Activity

Food and Fat (Illustrative Image)

Increased Dietary Fat May Enhance Exercise Benefits for People with High Blood Sugar

Exercise is one of the most important ways to maintain health and improve physical fitness, but some people—especially those with high blood sugar—may not get the full benefits they expect from exercise.

However, a recent scientific study has revealed a surprising finding: increasing fat in the diet may help the body benefit more from exercise in some cases. Researchers from Virginia Tech University led a study to understand the relationship between diet and the body's response to exercise.

Studies indicate that exercise helps the body improve its use of oxygen to produce energy, an important indicator of overall health and longevity, according to a report on the science website ScienceDaily.

But high blood sugar, medically known as hyperglycemia, can impair the muscles' ability to utilize oxygen during physical activity, reducing the positive effects of exercise. High blood sugar is also linked to an increased risk of heart disease, kidney disease, and metabolic disorders.

The study relied on a high-fat, low-carbohydrate ketogenic diet, a system that shifts the body's energy source from sugar to fat. This process, known as ketosis, causes the body to burn fat instead of glucose for fuel.

Significant Improvement in Muscle Response

Experiments on mice showed that following a ketogenic diet led to a rapid decrease in blood sugar levels within just one week. The animals' muscles also became more efficient at utilizing exercise, exhibiting changes in muscle fiber structure, with an increase in slow-release fibers, which are associated with greater endurance.

Furthermore, the muscles' ability to use oxygen more efficiently improved, reflecting enhanced aerobic fitness. The researchers believe the findings suggest that nutrition and exercise do not work in isolation, but rather that each can enhance the other's effects. In cases of high blood sugar, dietary adjustments may help restore the body's ability to fully benefit from physical activity.

What Does This Mean in Practice?

While the results appear promising, scientists emphasize that the study is still in its early stages as it was conducted on animal models. Furthermore, the ketogenic diet may be difficult or unsuitable for some individuals, so other dietary approaches—such as the Mediterranean diet—may be a more balanced and easier-to-follow option.

Ultimately, the researchers point out that the best health outcomes are often achieved when a healthy diet is combined with regular physical activity, especially for individuals with blood sugar imbalances.