Macro partitioning
Higher habitual dairy intake causally increases lean body mass in adults, as evidenced by Mendelian randomization analysis of 182,041 individuals.
To support lean mass maintenance or growth, include dairy in your daily diet. The study suggests a causal link between higher dairy intake and increased lean mass. Aim for multiple servings per day if tolerated, as the benefit appears dose-dependent.
The present study provides evidence to support a causal effect of higher dairy intake on increased lean mass... Genetically higher dairy intake was associated with increased lean mass (β=0.523 [0.170] kg per serving/day, P=0.002)
Why this rating
Large sample size (N=182,041) and robust MR methodology reduce confounding, though observational nature of the instrument remains a limitation.
Source
Dairy Intake and Body Composition and Cardiometabolic Traits among Adults: Mendelian Randomization Analysis of 182041 Individuals from 18 Studies
Mendelian Randomization of Dairy Consumption Working Group et al. · Clinical Chemistry · 2019
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →