Q. Is time-restricted dieting, like intermittent fasting, more effective than standard calorie-controlled diets?

In my own experience experimenting with various trendy diets—from complete fasting to strict timing—I found that while initial weight loss occurred, it was often accompanied by dizziness and a significant drop in productivity. The core of a successful diet is not 'efficiency,' but 'sustainability.' From the perspective of Traditional Korean Medicine (TKM), every individual has a different innate capacity for digestion and absorption. Specifically, those with Spleen Deficiency (Bi-heo, 脾虛) may encounter problems with intermittent fasting. When the Spleen's function is weak, the body lacks the power to generate energy; forcing a long fasting period causes the body to perceive this as a 'crisis,' triggering a survival mechanism to store energy more aggressively, which often leads to the yo-yo effect. Furthermore, if the body is burdened with Phlegm-Fluid (Dameum, 痰飮)—metabolic waste products—fasting without preparation can hinder metabolism, making the body feel bloated and heavy. Similarly, those with Blood Stasis (Eo-hyeol, 瘀血), or stagnant blood, may experience unstable blood sugar regulation during fasting, leading to sudden intense hunger or irritability. Therefore, rather than blindly following popular fasting windows, it is essential to first assess whether your digestive strength can withstand the fast and evaluate the accumulation of waste products in your body. The fastest and healthiest path to weight loss is creating a 'personalized timetable' tailored to your specific constitution and current physical condition.