Milk Fat in Early Childhood

In May 2026, the USDA released a final rule expanding fluid milk options across Child Nutrition Programs, including the CACFP.[iv] Beginning June 8, 2026, operators may now choose to serve whole, reduced-fat (2%), low-fat (1%), or fat-free (skim) milk to participants ages two and older. This change removes previous restrictions on saturated fat in milk and gives programs greater flexibility to select the milk options that best meet the needs and preferences of the children and families they serve. Importantly, this is not a requirement, but it opens the door to more choice, less waste, and streamlined operations.

This policy shift is a result of an increasing body of research that shows that limiting milk fat does not actually have a significant effect on weight outcomes for children. A systematic review of 29 pediatric studies found that whole-fat dairy products were not associated with increased body fat or weight gain in children and did not show consistent links to higher cardiometabolic risk.[v] In other words, the best available evidence does not support the idea that serving lower-fat milk helps prevent obesity in early childhood.

Longitudinal studies help paint an even clearer picture. In one large Canadian study following more than 2,000 children, those who consumed whole milk at age five had lower BMI, less body fat, and lower odds of obesity by age eight compared to children who consumed skim milk.[vi] Another study of more than 7,400 children found that as milk fat consumption increased, BMI decreased, and children who drank whole milk had lower odds of both overweight and obesity.[vii] Research from the United States shows similar patterns, with higher-fat milk having no association with negative health outcomes in early adolescence.[viii] Across these studies, the takeaway is consistent: milk fat does not appear to increase obesity risk.

So what might explain these findings? One possibility is that milk fat helps children feel full and satisfied, reducing the likelihood that they will consume extra calories from snacks or sugary drinks later in the day.[ix] Whole milk is also part of a complex “food matrix,” where fat, protein, and micronutrients work together in ways that may support metabolism and growth differently than low-fat versions.[x] At the same time, families of children who are already gaining excess weight may be more likely to choose low-fat milk, which can make it look like low-fat milk is associated with higher weight when the relationship may actually run in the opposite direction.[xi] These factors highlight an important lesson, that children’s diets are complex, and focusing on a single nutrient, like fat, does not always lead to better outcomes.

There are still important gaps in the research. Most studies are observational, which means they can show patterns but not prove cause and effect. More randomized trials are needed to help answer these questions more definitively.

For CACFP providers, the new USDA rule helps to address one of the most common challenges with fluid milk in child care settings. Programs now have the flexibility to offer milk options that children will actually drink, which may help reduce waste. Increased flexibility can also reduce administrative burden, making it easier to plan menus and meet meal pattern requirements without the risk of disallowances. Most importantly, it allows providers to better respond to the needs of the children and families they serve.

By giving programs the flexibility to choose what works best for their communities, USDA is taking an important step toward a more practical approach to child nutrition.

 

References

[i] 2020-2025 Dietary Guidelines for Americans. United States Department of Agriculture and United States Department of Health and Human Services.

[ii] [ii] Dietary Guidelines for Americans, 2025-2030 (2026). United States Department of Agriculture and United States Department of Health and Human Services.

[iii] The Scientific Foundation for the Dietary Guidelines for Americans, 2025-2030: Appendices (2026). United States Department of Agriculture and United States Department of Health and Human Services.

[iv] Expanding Fluid Milk Options in Child Nutrition Programs (2026). United States Department of Agriculture, Food and Nutrition Service.

[v] Nicholl A, Deering KE, Evelegh K, Lyons-Wall P, Lawrence D, Mori TA, Kratz M, O'Sullivan TA. Whole-fat dairy products do not adversely affect adiposity or cardiometabolic risk factors in children in the Milky Way Study: a double-blind randomized controlled pilot study. Am J Clin Nutr. 2021 Dec 1;114(6):2025-2042. doi: 10.1093/ajcn/nqab288. PMID: 34633422; PMCID: PMC8634568.

[vi] Zeitoun T, Chen Z, Burgner D, et al. Milk fat intake, adiposity, and obesity in Canadian children: findings from the prospective Canadian CHILD Cohort Study. The American Journal of Clinical Nutrition, 2026; 123(5). doi: 10.1016/j.ajcnut.2025.101186.

[vii] Vanderhout S, Keown-Stoneman C, Birken C, Thorpe K, O’Connor D, Maguire J. 61 Cow’s milk fat and child adiposity: a prospective cohort study. Paediatr Child Health. 2020 Aug;25(Suppl 2):e25–6. doi: 10.1093/pch/pxaa068.060. Epub 2020 Aug 19. PMCID: PMC7437261.

[viii] McGovern C, Rifas-Shiman S, Switkowski K, et al. Association of cow’s milk intake in early childhood with adiposity and cardiometabolic risk in early adolescence. The American Journal of Clinical Nutrition, 116(2), 561-571. doi: 10.1093/ajcn/nqac103.

[ix] Zeitoun (2026)

[x] Torres-Gonzalez M. The Relationship between Whole-Milk Dairy Foods and Metabolic Health Highlights an Opportunity for Dietary Fat Recommendations to Evolve with the State of the Science. Nutrients. 2023; 15(16):3570. https://doi.org/10.3390/nu15163570.

[xi] Vanderhout (2020)