A new clinical perspective: Treating obesity with nutritional coaching versus energy-restricted diets.

Although current guidelines for obesity treatment endorse lifestyle modifications to achieve weight loss, energy-restricted diets are still the most commonly used method for the management of overweight. Diet restriction, however, not only is ineffective in promoting long-term weight loss but also may have more costs than benefits, predisposing the individual to fat regain. Several physiological and psychological mechanisms protect the body against starvation and explain how food restriction can promote paradoxically the opposite of what it is planned to achieve, triggering changes in energy metabolism, endocrine function and, thus, body composition.