Q. I've been hearing a lot about the ketogenic diet lately. How exactly does it work to help with weight loss?

Our bodies naturally prefer glucose as the most convenient fuel source. When you significantly restrict carbohydrates, the body activates an 'emergency generator' by burning fat to produce ketone bodies. While effective for weight loss, it is important to consider this process through the lens of Traditional Korean Medicine (TKM). From a TKM perspective, we must consider the concept of 'Dameum' (痰飮), which refers to metabolic waste or fluid accumulation resulting from impaired fluid metabolism. A sudden dietary shift can cause these wastes to accumulate, leading to symptoms like indigestion or lethargy. Moreover, individuals with 'Spleen Deficiency' (脾虛)—a state where the digestive organs lack sufficient Qi (vital energy)—may find that a high-fat diet further weakens the Spleen's function, making the body feel heavier and more fatigued. Because digestive capacity and metabolic rates vary by individual, the key is to determine if your body is biologically equipped to metabolize fats efficiently. Rather than blindly following a trend, it is healthier to assess your current Qi state and customize the diet to prevent the 'yo-yo effect' and ensure long-term wellness.