Energy balance
Approximately two-thirds of the variability in Body Mass Index (BMI) among individuals within the same population is attributable to genetic factors rather than environmental differences.
Your body weight is heavily influenced by your genetics (about 67% of the variation). This means standard 'eat less, move more' advice may be less effective for you than for others because your biology fights back. Focus on environmental changes (like access to healthy food) and targeted therapies rather than just blaming yourself for lack of willpower.
Studies of twins reared apart indicate that approximately two-thirds of the variability in BMI can be attributed to genetic factors
Why this rating
Based on multiple large-scale twin studies (Finnish, Japanese, American) with consistent high heritability estimates (0.61-0.85).
Source
Energy balance and weight regulation: genetics versus environment
Éric Ravussin et al. · British Journal Of Nutrition · 2000
DOI 10.1017/s0007114500000908
More from this paper
- Obesity is caused by the interaction of genetic factors with an obesogenic environment (constant access to energy-dense food and minimal physical demands), termed a 'pathoenvironment' or 'obesigenic environment'.Strong
- Genetic factors account for specific portions of BMI variability through three measurable metabolic traits: metabolic rate (12%), respiratory quotient/fat oxidation (5%), and spontaneous physical activity (10%), leaving 40% attributable to food intake regulation.Good
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