Skip to content
Bored Studies
RecruitingAccepts healthy volunteers

Supplementation of Cholecalciferol and Related Active Metabolites Through Bioenhancing Layer's Eggs

Cornell University · NCT07859280

View Study & Apply (opens in a new tab)

Opens the official ClinicalTrials.gov record, with the study team’s contacts. Bored Studies doesn’t enroll anyone.

Key facts

Compensation
Not posted. Ask the study team before screening.
Who can join
Ages 18–40 · All sexes
Healthy volunteers
Accepted
Study type
Interventional · Not applicable
Target enrollment
60
US sites recruiting
1
Study start
January 2027
Record last updated
October 5, 2026

Status re-checked against ClinicalTrials.gov within the last 12 hours.

What the study is about

The purpose of this research is to evaluate if 1) consumption of vitamin D3- or 25(OH)D3-biofortified eggs will increase vitamin D and 25(OH)D status in young adults who consume these bioenhanced eggs, 2) to determine if the gut microbiome profile is associated with 25(OH)D or vitamin D status and 3) to evaluate possible changes in the gut microbiome following an 8-week supplementation period providing 5(OH)D- or vitamin D bioenhanced eggs.

Being studied: Vitamin D3 bioenhanced eggs; 25(OH)D3 bioenhanced eggs

Conditions: Healthy Adult Participants; Vitamin D Insufficiency

Eligibility criteria

Copied from the official record. The study team makes the final decision at screening.

Show full criteria

Inclusion Criteria

  • Healthy adults
  • Non-smoking
  • Age between 18- 40 years
  • Females: premenopausal and not pregnant or lactating
  • Body mass index (BMI) between 18.5-27.0 kg/m2.
  • No planned trip(s) to lower latitudes during the 8-week study

Exclusion Criteria

  • BMI \<18.5 or > 27.0 kg/m2,
  • Age \<18 y or > 40y,
  • Smoking
  • Pregnancy, lactating
  • Have gastrointestinal disorders/malabsorption diseases/dietary restrictions/use of medications known to impact vitamin D and 25(OH)D absorption
  • Been prescribed antibiotics within 3 months before enrolling
  • History or current diagnosis of any of the following conditions: intestinal problems (cystic fibrosis, Crohn's Disease, IBD, etc.), blood disorders (sickle cell, thalassemia, etc.), stomach problems (ulcers or other problems requiring antacids), joint diseases requiring anti-inflammatory medication, or asthma.
  • Planned trip(s) to lower latitudes during the 8-week study

Recruiting US locations

  • Human Metabolic Research Unit

    Ithaca, NY 14850

    Site contact: Jennifer Thompson, NP · 215-565-6742 · jjt226@cornell.edu

Study contacts (from the official record)

  • Kimberly O'Brien, PhD · (607) 255-3743 · koo4@cornell.edu
All nutrition & metabolism studies in New York →
Supplementation of Cholecalciferol and Related Active Metabolites… (NCT07859280) | Bored Studies