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Study identifier: NCT05835037 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Effect of Zinc on Glucose Homeostasis

Condition: Prediabetic State · Hyperglycemia  ·  Sponsor: University of Maryland, Baltimore

PhasePhase 4
Planned participants200
Who can joinAll sexes, 18 Years to 80 Years
Healthy volunteersNo

About this study

The purpose of this investigation is to evaluate the impact of zinc supplementation on fasting glucose levels, hemoglobin A1c (HbA1c), and other indices of glucose homeostasis in individuals with prediabetes. The investigators hypothesize that prediabetic subjects receiving zinc will demonstrate a greater decrease in HbA1c and blood glucose compared to prediabetic subjects receiving placebo. Specific Aim: Conduct a prospective, double-blind randomized clinical trial comparing the effects of 12 months of zinc supplementation (zinc gluconate 30 milligram \[mg\] per day) versus placebo on glucose homeostasis. Based upon expected effect size and power calculations, and anticipating a 20% drop-out rate, the investigators will study 200 prediabetic subjects (100 per group) using a 1:1 randomization design. HbA1c, fasting plasma glucose, and other measures will be obtained at 0, 6, and 12 months and will be compared between zinc supplementation and placebo groups.

This description comes directly from the study's public registry record.

Talk to the study team

Toni I Pollin, PhD  ·  410-706-1630  ·  tpollin@som.umaryland.edu

Hilary B Whitlatch, MD  ·  443-682-6800  ·  hwhitlatch@som.umaryland.edu

Always discuss trial participation with your own doctor first.

Locations (1)

Amish Research ClinicLancaster, Pennsylvania, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT05835037