BRD Clinic
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How exactly does the Subway diet work, and why is it considered effective for weight loss?

The core principle of the Subway diet lies in reducing sugar intake while increasing dietary fiber. By choosing wheat bread and low-fat protein and minimizing sauces, you stabilize blood sugar and lower insulin levels, which prevents body fat accumulation. From a Traditional Korean Medicine perspective, this approach prevents the buildup of 'Phlegm-fluid' (Dam-eum), a type of metabolic waste caused by 'Spleen Deficiency' (Bi-heo), thereby promoting healthy systemic circulation.

The Subway diet is effective because it focuses on minimizing insulin spikes. By opting for whole grains and fresh vegetables instead of refined white bread and sugary sauces, you ensure a gradual rise in blood sugar, which prevents the body from switching into 'fat storage mode.' In Traditional Korean Medicine (TKM), obesity is often rooted in Spleen Deficiency (Bi-heo). When the Spleen's function is weakened, the body cannot fully transform food into energy, leading to the accumulation of a sticky metabolic byproduct called Phlegm-fluid (Dam-eum). A fiber-rich diet supports the Spleen’s function of Transport and Transformation (Un-hwa), ensuring that waste does not stagnate. However, patients with a 'Cold' constitution or weak digestion should be cautious; consuming excessive raw, cold vegetables can further impair the Spleen and Stomach, potentially leading to Blood Stasis (Eo-hyeol) or a sluggish metabolism. In such cases, it is better to eat the sandwich toasted and pair it with warm tea. True dieting begins with choosing ingredients that harmonize with your body's internal energy.

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Dr. Yeonseung Choe

Dr. Yeonseung ChoeChief Director

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How exactly does the Subway diet work, and why is…. The core principle of the Subway diet lies in reducing sugar intake while increasing dietary fiber. By choos

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