Q. I've been told that eating enough protein is essential for weight loss. Why exactly is it necessary, and what is the principle behind it helping with weight loss?

I remember a time when I tried to lose weight by simply starving myself. I ended up feeling dizzy and my body became bloated with edema, which made me realize that was the wrong approach. Why is protein so crucial for dieting? From a Western medical perspective, it is about 'metabolic efficiency.' Our bodies use energy even while digesting food, and protein requires the most energy to process. It also serves as the structural material for muscle, ensuring your 'metabolic engine' stays active. In Traditional Korean Medicine (TKM), we explain this through the relationship between Spleen Qi Deficiency (Biheo, 脾虛) and Phlegm-fluid (Dameum, 痰飮). Spleen Qi Deficiency refers to a state where the energy of the digestive system is weakened. When this function fails, metabolic waste called Phlegm-fluid accumulates, shifting the body into a state that gains weight easily. High-quality protein plays a key role in replenishing the body's Qi. Only when your vital energy is sufficient can the Spleen function be revitalized, giving the body the strength to expel waste products like Phlegm-fluid on its own. In this sense, protein is the core power source that keeps metabolic circulation running at full speed. However, depending on your individual constitution (Sasang type), chicken breast might be a perfect match for some, while others might find it hard to digest, leading to decreased energy. It is important to first observe your digestive capacity and find the protein source that suits your specific body type. That is the true start of a sustainable diet without the yo-yo effect.