What effect do Very Low-Calorie diets NOT have?

Very low-calorie diets are often implemented for rapid weight loss. One notable effect of such diets is that they can decrease metabolic rate over time due to the body's adaptation to a lower energy intake, which means it burns fewer calories to maintain basic functions. This metabolic adaptation can lead to increased energy efficiency, as the body becomes more effective at using its available energy resources.

Decreasing hunger is typically not an effect of very low-calorie diets; in fact, many people experience increased hunger and cravings due to the significant caloric restriction. The body's physiological response to inadequate energy intake often involves heightened hunger signals as a way to encourage food consumption and restore energy balance.

Moreover, very low-calorie diets are not usually associated with improved physical performance. Inadequate calorie intake can lead to decreased energy levels, muscle mass, and overall fitness, making it challenging for individuals to perform optimally in physical activities.