Q. Now that I'm in my 40s, I'm not losing weight even though I eat less than I used to. Why is that?

Many people in their 40s feel frustrated when traditional calorie-cutting no longer works, often finding that their bodies feel heavier despite dietary restrictions. At this stage of life, the issue shifts from 'calories' to 'metabolic capacity.' From the perspective of Traditional Korean Medicine (TKM), this is explained by several factors: 1. Acceleration of Spleen Deficiency (Bi-heo, 脾虛): When the function of the Spleen weakens, the body's ability to convert nutrients into energy diminishes. Consequently, the body becomes prone to storing what it consumes rather than burning it. 2. Accumulation of Phlegm-Fluid (Dameum, 痰飮): As metabolism slows, unnecessary metabolic waste known as 'Dameum' accumulates. This acts like a sticky film that obstructs the flow of Qi and Blood, often leading to edema and swelling. 3. Circulatory Decline due to Blood Stasis (Eohyeol, 瘀血): When blood becomes stagnant and impure, energy cannot be efficiently delivered to the peripheral nerves. This is a primary reason why exercise feels less effective than it once was. 4. Hormonal Changes and Qi Deficiency (Gi-heo, 氣虛): A general decline in systemic Qi leads to a sharp drop in the basal metabolic rate. Energy that used to burn naturally while at rest now requires conscious, active effort to be consumed. Ultimately, weight loss in your 40s is not about 'eating less' but about creating a 'body that burns well.' Excessive fasting can lead to muscle loss, further lowering your metabolic rate and creating a vicious cycle. The key is to accurately diagnose which part of your internal circulation is blocked and focus on untying those knots.