I remember standing in front of convenience store refrigerators myself, trying to decipher those tiny ingredient lists. From a Traditional Korean Medicine perspective, soybeans have a neutral to slightly cool nature, making them highly effective at clearing internal heat and resolving 'Dam-eum' (痰飮)—metabolic waste or phlegm-rheum. Soy milk is beneficial because its saponins help clear 'Eo-hyeol' (瘀血), or blood stasis, by purifying the blood of excess fats. Its rich fiber also prevents diet-induced constipation and provides satiety to curb 'false hunger.' However, those with 'Bi-heo' (脾虛), or Spleen deficiency, might find the cool nature of beans causes bloating or gas. Additionally, many commercial products are high in sugar, which can spike insulin levels. I recommend choosing unsweetened options and observing your digestion; if your stomach feels cold after drinking it, try warming it up. The best diet partner is the one that aligns with your body’s unique signals.