Why Long-Term Weight Loss Is So Difficult—and Rarely Works
Weight loss remains a challenge for many, with long-term success proving difficult. Studies show that only a small fraction of dieters keep the weight off permanently. Meanwhile, the body's relationship with fat is complex—serving as both an energy source and a vital part of overall health. Fat plays a key role in the body beyond just energy storage. It insulates organs, supports hormone production, and aids in fertility and metabolism. Even at rest, the average person burns 60-80g of fat daily through basic functions and light movement. At lower intensities, the body prefers fat over carbohydrates for fuel, as it provides more energy per gram.
Weight loss, however, is not just about shedding fat. It also reduces lean muscle, connective tissue, and a small amount of bone density. While a calorie deficit and increased exercise can boost fat burn, the traditional 'calories in versus calories out' approach often fails in the long run. Many find it unsustainable and ineffective.
The widely cited Wishnofsky's Rule—claiming a 7,700kcal deficit equals 1kg of fat loss—has been largely discredited for oversimplifying the process. Research shows that within a year, around 60% of lost weight is typically regained, with some people putting back 35% of it. International studies suggest that, on average, only about 25% of initial weight loss is maintained long-term. Despite various methods, lasting weight loss remains rare, with only 10 to 20% of dieters succeeding in the long term. The body's reliance on fat for essential functions complicates the process further. While exact numbers for Germany are unclear, global trends highlight the difficulty of keeping weight off after the first year.
