Why Weight Loss Often Slows Over Time One of the most common and frustrating experiences during weight loss is seeing progress come to a halt despite continuing the same healthy habits. Many people begin a new eating plan and experience steady results during the first few weeks or months. The number on the scale decreases, clothes fit more comfortably, and motivation remains high. Then, without any obvious change in diet or exercise, weight loss slows or stops altogether. This experience often leads to an important question: Has my body become used to my diet? Although people frequently describe this as becoming "immune" to a diet, that phrase is not a medical term. What it usually reflects is a well-documented biological process known as metabolic adaptation . As the body adjusts to sustained calorie restriction and weight loss, it undergoes several physiological changes that make continued weight loss progressively more difficult. Research shows that prolonged calorie re...
