# VITamin D and OmegA-3 TriaL: Effects on Bone Structure and Architecture (VITAL)

> **NCT01747447** · NA · COMPLETED · sponsor: **Brigham and Women's Hospital** · enrollment: 771 (actual)

## Conditions studied

- Bone Density
- Body Composition
- Bone Health

## Interventions

- **DIETARY_SUPPLEMENT:** Vitamin D3 placebo
- **DIETARY_SUPPLEMENT:** Fish oil placebo
- **DIETARY_SUPPLEMENT:** omega-3 fatty acids (fish oil)
- **DIETARY_SUPPLEMENT:** Vitamin D3

## Key facts

- **NCT ID:** NCT01747447
- **Lead sponsor:** Brigham and Women's Hospital
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2012-08
- **Primary completion:** 2017-12
- **Final completion:** 2023-08-02
- **Target enrollment:** 771 (ACTUAL)
- **Last updated:** 2026-04-28

## Collaborators

- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01747447

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01747447, "VITamin D and OmegA-3 TriaL: Effects on Bone Structure and Architecture (VITAL)". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT01747447. Licensed CC0.

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