02/05/2026
Weight loss requires a calorie deficit — but going too low can backfire.
Research shows aggressive restriction slows resting metabolism, increases hunger hormones, reduces satiety signals, and accelerates muscle loss.
These adaptations increase fatigue, cravings, and the risk of weight regain.
A moderate, individualized deficit supports sustainable fat loss and long-term health.
Refs: Hall 2016; Rosenbaum & Leibel 2010; Müller 2015; Dulloo 2015