期刊
OBESITY
卷 16, 期 12, 页码 2663-2668出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/oby.2008.434
关键词
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资金
- UK Medical Research Council [G0500079]
- Biotechnology and Biological Sciences Research Council [31/D19086]
- Medical Research Council [G9817803B, G19/2, G0500079] Funding Source: researchfish
- MRC [G19/2, G0500079] Funding Source: UKRI
The growing evidence of health risks associated with the rise in childhood obesity adds to the urgency of understanding the determinants of BMI. Twin analyses on repeated assessments of BMI in a longitudinal sample of >7,000 children indicated that the genetic influence on BMI becomes progressively stronger, with heritability increasing from 0.48 at age 4 to 0.78 at age 11. In the same large twin sample, the association between a common variant in the FTO gene and BMI increased in parallel with the rise in heritability, going from R(2) < 0.001 at age 4 to R(2) = 0.01 at age 11. These findings suggest that expression of FTO may become stronger throughout childhood. Increases in heritability may also be due to children increasingly selecting environments correlated with their genetic propensities.
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