Q. Doctor, what do you think about those diet cookies and snacks sold at stores like Olive Young? Is it okay to eat them, and do you have any specific criteria for choosing them?

I understand the temptation; even as a practitioner, I sometimes grab protein chips after a long day of consultations. These diet snacks provide 'psychological liberation,' helping to relieve the stress of a strict diet and preventing sharp blood sugar spikes. However, in Traditional Korean Medicine (TKM), highly processed foods are often seen as a source of 'Dameum' (phlegm-fluid), which refers to the accumulation of metabolic waste in the body. Specifically, products heavily loaded with artificial sweeteners can lead to 'Biheo' (Spleen Deficiency), weakening your digestive fire. If you feel bloated or experience gas after eating them, they are effectively acting as a toxin to your system. The ultimate criterion is your body's digestive capacity: if you feel light and your digestion remains smooth, you can enjoy them in moderation. But if you feel heavy or swollen the next day, it is better to avoid them regardless of their 'diet' label. I generally recommend whole foods like nuts or naturally dried vegetables over processed snacks. Remember, finding a snack that suits your 'Chejil' (constitution) is the best way to maintain your health while dieting.