Many people attempt extreme fasting to lose weight, only to experience fatigue and dizziness. The core of sustainable weight loss lies in how efficiently your body processes and utilizes energy. Recent research indicates a strong link between the gut microbiome and obesity; a deficiency in specific beneficial bacteria can make a person more prone to weight gain even with the same caloric intake. In Western medicine, toxins produced by harmful gut bacteria cause inflammation and increase insulin resistance, which accelerates fat accumulation. From the perspective of Traditional Korean Medicine (TKM), this condition is viewed through the lens of 'Dameum' (痰飮)—the accumulation of unnecessary waste products and stagnant fluids in the body. When intestinal function declines and waste accumulates, the circulation of Qi and Blood is obstructed, slowing down the overall metabolism. Specifically, when there is 'Bi-heo' (脾虛), or deficiency of the Spleen, the body fails to convert nutrients into energy efficiently, leaving 'residue' that makes one prone to weight gain. Diet probiotics serve as 'foundational work' to clear this Dameum and support Spleen function, thereby improving metabolic efficiency. However, because gut environments vary significantly between individuals, it is crucial to understand your specific constitution (Sasang typology) and current health status for the best results.