The Claim
Under strictly controlled laboratory conditions with enforced daily energy deficits of 1000 kcal and supervised exercise, individuals exhibit wide variation in weight loss (1–8 kg over 100 days), and this variation is strongly correlated within monozygotic twin pairs, suggesting a genetic component to metabolic response to energy restriction.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
When people follow identical strict diet and exercise regimens with a 1000 kcal daily deficit, they lose different amounts of weight—between 1 and 8 kg over 100 days—and identical twins tend to lose similar amounts, indicating that genetics may influence how the body responds to calorie restriction.
See the scientific wording
Under strictly controlled laboratory conditions with enforced daily energy deficits of 1000 kcal and supervised exercise, individuals exhibit wide variation in weight loss (1–8 kg over 100 days), and this variation is strongly correlated within monozygotic twin pairs, suggesting a genetic component to metabolic response to energy restriction.
What the research says
1 studyEven when people follow diet and exercise plans exactly, some lose a lot of weight and others lose little or even gain weight—and this seems to be partly because of their genes.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.