Research
Molecular
The LCT genotype with 1 or 2 T allele was significantly associated with higher dairy intake and higher BMI.
Genetic factors may influence how dairy intake affects BMI.
StrongSupportsmedium confidence
the LCT genotype with 1 or 2 T allele was significantly associated with 0.20 (95% CI, 0.14–0.25) serving/day higher dairy intake and 0.12 (95% CI, 0.06–0.17) kg/m2 higher BMI.
Why this rating
Based on a large Mendelian randomization analysis.
Source
Dairy Consumption and Body Mass Index Among Adults: Mendelian Randomization Analysis of 184802 Individuals from 25 Studies
Mendelian Randomization of Dairy Consumption Working Group et al. · Clinical Chemistry · 2017
DOI 10.1373/clinchem.2017.280701
Meta-analysisCited 46×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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