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Milk for Diabetes Prevention
Sponsor: Albert Einstein College of Medicine
Summary
Individuals with lactase non-persistence (LNP; determined by a functional variant in the LCT gene \[rs4988235, GG genotype\]) are susceptible to lactose intolerance in adulthood due to deficiency of lactase, the enzyme which digests milk lactose sugars. However, many LNP individuals still drink ≥1 cup of milk daily. Recent analysis in the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) found that consumption of 1 serving (cup) of milk/day was associated with \~30% lower risk of type 2 diabetes among LNP individuals, but not among individuals with lactase persistence (LP). This beneficial effect might be partially explained by favorable alterations in gut microbiota and related metabolites associated with higher milk consumption among LNP individuals. Based on these observational study findings, the investigator team proposes to conduct a randomized, controlled trial of lactose-containing vs. lactose-free milk in LNP individuals with pre-diabetes, to comprehensively investigate the effects of milk intake on the gut microbiome and glycemic outcomes.
Key Details
Gender
All
Age Range
18 Years - 70 Years
Study Type
INTERVENTIONAL
Enrollment
40
Start Date
2026-02
Completion Date
2028-02
Last Updated
2025-12-18
Healthy Volunteers
No
Conditions
Interventions
Lactose-Containing Milk
Participants will be asked to drink regular milk (1% or 2%) for 12 weeks as follows: * Weeks 1-4: ½ cup milk per day * Weeks 5-8: 1 cup milk per day * Weeks 9-12: 2 cups milk per day Participants will continue drinking 2 cups milk/day for 2 weeks after the 12-week follow-up visit.
Lactose-Free Milk
Participants will be asked to drink 1% or 2% lactose-free milk for 12 weeks as follows: * Weeks 1-4: ½ cup milk per day * Weeks 5-8: 1 cup milk per day * Weeks 9-12: 2 cups milk per day Participants will continue drinking 2 cups milk/day for 2 weeks after the 12-week follow-up visit.
Locations (1)
HCHS/SOL Bronx Field Center
The Bronx, New York, United States