Herbal diet medicine in Traditional Korean Medicine is not simply a 'weight loss drug' but an approach that corrects imbalances in the body to help it maintain a normal weight on its own. For example, many obese patients have spleen deficiency (biheo), which impairs digestion and metabolism. When spleen function weakens, water and waste products accumulate, making weight loss difficult. Herbal medicine then works to strengthen the spleen and stomach (biwi) function and resolve stagnant substances like phlegm-dampness (seuptam) or blood stasis (eohyeol). Advantages include: first, because it improves constitution, the rebound effect is minimal—since the body’s metabolic environment changes rather than being forcibly reduced short-term. Second, common side effects of Western diet drugs—nausea, insomnia, palpitations—are nearly absent. Third, overall health conditions such as fatigue, indigestion, and constipation often improve concurrently. Disadvantages include the gradual onset of effects; expecting a specific monthly weight loss may lead to disappointment. Also, a prescription that does not match one's constitution can place strain on the body, so professional diagnosis is essential. Herbal medicine costs can be burdensome, and without lifestyle changes, medication alone has limitations. In conclusion, this approach works best when adopted with the mindset of 'changing my body.' It is especially worth considering for those who want a healthy constitutional shift rather than rapid weight loss, or who are tired of yo-yo dieting. However, it is most important to first consult a specialist to determine suitability based on individual condition and goals.