Hormonal
Caloric restriction triggers adaptive thermogenesis, including reduced BMR/RMR, hormonal shifts (lowered T3, leptin, increased ghrelin), and increased appetite, which persist long-term and contribute to weight regain.
When you restrict calories, your body fights back by lowering your metabolic rate and increasing hunger hormones. This is a survival mechanism, not a personal failing. To manage this, consider strategies that preserve muscle mass, manage stress, and perhaps use precision nutrition to mitigate these adaptive responses.
Caloric restriction invokes a suite of adaptive mechanisms involving adaptive thermogenesis, changes in appetite, alterations in hormonal and metabolic profiles, and changes in body composition. These adaptations represent a survival mechanism that enables the body to prolong energy reserves during food scarcity, albeit with notable inter-individual variability.
Why this rating
The paper cites specific studies (Leibel, Biggest Loser, Sumithran) with statistical significance.
Source
Beyond Calories: Individual Metabolic and Hormonal Adaptations Driving Variability in Weight Management—A State-of-the-Art Narrative Review
Nikolaos Theodorakis et al. · International Journal of Molecular Sciences · 2024
DOI 10.3390/ijms252413438
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