The Study
Milk fat intake, adiposity, and obesity in Canadian children: findings from the prospective Canadian CHILD Cohort Study
This study watched a group of kids over time and noticed that kids who drank whole milk tended to have less body fat than kids who drank skim milk. But it didn’t make the kids change their milk—it just recorded what they were already drinking. So we can’t say the milk caused the difference.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Kids who drank whole milk at age 5 ended up with less body fat at age 8 than kids who drank skim milk, even when they ate the same amount of other foods.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 567 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — even small drops in BMI z-score like this are linked to better heart health and lower diabetes risk later in life.
- 2Kids who drank whole milk had 0.42 lower BMI z-score, 1.58% less body fat, and 69% lower odds of obesity at age 8 compared to skim milk drinkers.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
The American Journal of Clinical Nutrition
Year
2026
Authors
Tara Zeitoun, Zheng Chen, D. Burgner, Gabbi MacKechnie, Prue Huntington, T. Mansell, Danielle K. Longmore, P. Mandhane, E. Simons, S. Turvey, P. Subbarao, T. Moraes, Daniel W. Sellen, K. Miliku
Related Content
Claims (6)
People who drink whole milk tend to have less body fat than those who do not, even when their total saturated fat intake is accounted for.
Children who drank whole milk at age 5 were 69% less likely to be obese at age 8 than children who drank skim milk, based on WHO obesity criteria, after accounting for maternal body weight, diet, and physical activity.
Children who drank whole cow milk at age 5 had 75% lower odds of developing preclinical obesity by age 8, based on criteria that identify excess body fat without metabolic disease.
Children who drank whole milk at age 5 had 1.58% less body fat at age 8 than children who drank skim milk, based on measurements adjusted for other factors.
Children who drank whole milk at age 5 had lower body mass index scores at age 5 and age 8 than children who drank skim milk, after accounting for maternal body mass index, diet quality, physical activity, and other factors.
Mammalian dairy products have biological properties that increase energy intake in infants by providing concentrated calories and reducing signals that tell the body to stop eating.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.