Q. I always experience yo-yo effect when dieting. How can I prevent it?

Most people who suffer from yo-yo effect focus solely on the formula 'eat less and move more.' However, in Traditional Korean Medicine, dieting is viewed as a process of constitution improvement. Constitution refers to innate patterns of digestion, absorption, and energy utilization; ignoring it inevitably leads to rebound weight gain. First, before starting any dietary regimen, check for Spleen deficiency (脾虛, biheo). Weak Spleen function fails to process food properly, generating phlegm-rheum (痰飮) or blood stasis (瘀血), which are root causes of weight gain. I was shocked to see that starving myself to 'eat less' actually weakened my Spleen further and worsened the yo-yo effect. Second, approaches must vary by constitution. For example, Soeumin (少陰人) have cold digestive systems, requiring warm herbs and foods, while Taeumin (太陰人) have strong Liver Qi and need to soothe the liver. Blindly following 'low-carb high-fat' or 'intermittent fasting' may conflict with your constitution and intensify rebound. Third, herbal medicine is not simply for weight loss but to regulate the functions of Spleen, Lung (肺), and Kidney (腎) to restore metabolic rhythm. In particular, Qi-tonifying (補氣) herbs improve Spleen deficiency, naturally regulate appetite, enhance energy expenditure, and reduce rebound. Fourth, lifestyle changes should follow 'slow and steady'—trying to change everything at once stresses the body, impairing adrenal function and paradoxically encouraging fat retention. Losing weight slowly at ≤0.5 kg per week is the most reliable way to prevent yo-yo effect. I learned this principle after some trial and error myself.