Prolonged dieting and maintaining a caloric deficit cause measurable long-term physiological effects
the verdict
SUPPORTED
the evidence backs this
confidence 94/100
Prolonged dieting and caloric deficits consistently trigger measurable physiological adaptations, including metabolic slowing and hormonal shifts aimed at energy conservation.
Evidence for · 5
Effect of 6-Month Calorie Restriction on Biomarkers of Longevity, Metabolic Adaptation, and Oxidative Stress in Overweight Individuals
2006 · cited by 983
Demonstrates that 6 months of calorie restriction in humans leads to metabolic adaptation, reducing 24-hour energy expenditure beyond what is expected from changes in body mass alone.
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More for · 4
A 2-Year Randomized Controlled Trial of Human Caloric Restriction: Feasibility and Effects on Predictors of Health Span and Longevity
2015 · cited by 487
Shows that a 2-year caloric restriction intervention in humans induces sustained changes in metabolic rate and hormonal regulators such as triiodothyronine.
Physiological adaptations to weight loss and factors favouring weight regain
2015 · cited by 425
Reviews physiological adaptations to weight loss and caloric restriction, noting persistent perturbations in circulating appetite hormones and energy homeostasis that favor weight regain.
Metabolic and Behavioral Compensations in Response to Caloric Restriction: Implications for the Maintenance of Weight Loss
2009 · cited by 356
Provides objective free-living measurements showing that caloric restriction triggers measurable metabolic adaptation and behavioral reductions in total daily energy expenditure.
Caloric restriction in humans reveals immunometabolic regulators of health span
2022 · cited by 311
Reports that prolonged caloric restriction in humans causes transcriptional reprogramming in adipose tissue and immune regulation that affects mitochondrial bioenergetics and metabolic health.