📝 Detailed Answer
To discuss the benefits: Herbal medicine focuses on improving constitution. For example, in cases of Spleen Qi Deficiency (biheo) with poor digestion and edema, herbs that strengthen spleen function aid metabolism and fluid excretion. For those with Phlegm-Fluid (dameum), herbal medicine helps resolve phlegm and stabilize appetite. Thus, some do see results without any diet control. However, drawbacks are clear: herbal medicine does not directly restrict caloric intake, so excessive calorie consumption can negate its effects. Additionally, it cannot prevent muscle loss or basal metabolic rate decline from lack of exercise. I've learned through experience that expecting substantial weight loss from herbal medicine alone without diet changes is unrealistic. In conclusion, it varies by situation. Even a busy office worker can combine herbal medicine with simple diet adjustments, like replacing breakfast, or light exercise to greatly enhance results. If diet control is truly impossible, I recommend using herbal medicine to first improve constitution, then gradually change lifestyle habits. Remember, the key is not a 'perfect diet' but 'sustainable change.'