Create a moderate caloric deficit of 10% to 20% below your total daily energy expenditure (TDEE) to lose weight sustainably without compromising muscle mass, metabolism, or general well-being.

noli's read

This recommendation to limit the deficit to 10% or 20% aligns perfectly with research on body composition optimization. A meta-analysis shared by *Evidence Strong* confirms that overly aggressive restriction (beyond 500 calories per day for an average adult) directly harms muscle mass preservation. Furthermore, a randomized controlled trial (RCT) published on *PMC (Effects of Weight Loss)* shows that a 20% restriction induces lean mass loss, an effect that can only be curbed by the addition of physical activity. In terms of energy, a narrative review published in *PMC (Beyond Calories)* details how an overly pronounced deficit causes the body to slow its resting metabolism via survival-based hormonal adaptations. Finally, observations from the *National Weight Control Registry* remind us that excessive dietary rigidity is often counterproductive for mental balance, promoting compensatory behaviors and weight rebound.

the sources

1. 1Hall KD, Heymsfield SB, Kemnitz JW, et al. 2012
2. 2Rolls BJ 2009
3. 3thefitness.wiki