In premenopausal women with overweight, how closely they follow their diet is the most important factor in determining how quickly they reach their weight loss goals, more so than their metabolism,...
Mechanism
Synthesis from 1 study
Even when the body slows down metabolism to save energy during dieting, women who stick closely to their eating plan keep burning more calories than they consume, helping them reach their goal faster — this persistence matters more than how much the metabolism slows down (10.1002/oby.23333).
Most probable mechanism
When women stick closely to their diet, they maintain a consistent calorie deficit even when their bodies slow down metabolism to save energy, which helps them reach their weight loss goal faster than those who don't stick to the diet — even if their metabolism adapts strongly (10.1002/oby.23333).
Dietary adherence determines the magnitude and consistency of daily energy deficit by controlling caloric intake relative to energy needs, regardless of changes in metabolic rate (10.1002/oby.23333).
Weight loss reduces fat and muscle mass, lowering the body’s baseline energy needs and triggering physiological adaptations that further reduce resting metabolic rate below predicted levels (10.1002/oby.23333).
Metabolic adaptation reduces the energy deficit by lowering total daily energy expenditure, which would otherwise prolong weight loss if not counteracted by sustained dietary adherence (10.1002/oby.23333).
Individuals with higher dietary adherence maintain a larger net energy deficit despite metabolic adaptation, leading to faster achievement of weight loss goals compared to those with lower adherence, even when adaptation is present (10.1002/oby.23333).
Evidence from Studies
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Contradicting (1)
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Metabolic adaptation delays time to reach weight loss goals
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