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Metabolic Adaptation: The Limits of Weight Loss Impact
Weight loss impacts resting metabolic rate (RMR), with significant decreases observed after the initial 10% body weight loss due to natural adaptation. Individuals following an extreme low-calorie diet of 800 calories per day achieved a total weight loss of 20%, yet the RMR's decline was limited after the first phase. This indicates a threshold exists beyond which further weight loss does not significantly decrease RMR, suggesting that while initial weight loss results in metabolic slowing, this effect plateaus at higher weight losses.