Researchers are proposing a simple finger-prick blood test that measures the glucose ketone index (GKI) to monitor metabolic health in cancer and other chronic diseases. The test compares blood glucose and ketone levels, providing insight into the body’s metabolic state and mitochondrial function. Scientists believe GKI could help track the effects of diet, fasting, and exercise interventions, particularly those aimed at achieving nutritional ketosis. However, they emphasize that the test is not a cure or a standalone diagnostic tool, and disease-specific target ranges still need validation through larger clinical studies. If confirmed, GKI could become a valuable tool for personalized disease management and prevention.
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