Q. I've tried intermittent fasting, but I feel extremely lethargic and dizzy. Can herbal medicine help in this case?

The dizziness and lethargy experienced during fasting are often categorized in Traditional Korean Medicine (TKM) as a state of 'Spleen Deficiency' (Bi-heo). When the function of the Spleen is weakened, the body becomes inefficient at converting food into energy, causing your energy levels to plummet even after short periods of fasting. Furthermore, if you have 'Blood Stasis' (Eo-hyeol) or an accumulation of 'Phlegm-fluid' (Dam-eum)—metabolic waste products—your body may feel heavy and your recovery speed will slow down. In clinical practice, we often see patients who experience heart palpitations or insomnia while fasting. For these individuals, the answer is not to fast more, but to first reinforce their vital energy and normalize metabolic functions. The body must feel that it is in a 'safe state' to effectively burn body fat. While not everyone experiences these side effects, ignoring the signals your body is sending and relying solely on 'mental strength' can be counterproductive and dangerous. It is crucial to receive an accurate diagnosis of your current condition and a prescription tailored to your specific constitution and energy levels. Rather than forced restriction, I recommend a customized management approach that aligns with what your body can actually handle.