# TASK ORDER 19: INVITED

> **NIH NIH N01** · SOCIAL AND SCIENTIFIC SYSTEMS,  INC. · 2022 · $1,184,363

## Abstract

This work implements a Phase II, dose-ranging, randomized clinical trial (“The Investigation of Vitamin D and Menstrual Cycles Trial: A Phase II Randomized Trial”) investigating vitamin D’s influence on the hypothalamic-pituitary-ovarian axis. The study will carefully evaluate the hormonal, ovulatory, and overall menstrual cycle changes that occur with vitamin D treatment. Vitamin D supplementation may be a low-cost intervention that improves menstrual cycle function and fertility.

## Key facts

- **NIH application ID:** 10710482
- **Project number:** 273201600003I-P00003-759602100019-2
- **Recipient organization:** SOCIAL AND SCIENTIFIC SYSTEMS,  INC.
- **Principal Investigator:** VICKI HART
- **Activity code:** N01 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2022
- **Award amount:** $1,184,363
- **Award type:** —
- **Project period:** 2021-09-01 → 2023-07-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10710482

## Citation

> US National Institutes of Health, RePORTER application 10710482, TASK ORDER 19: INVITED (273201600003I-P00003-759602100019-2). Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/grant/nih/10710482. Licensed CC0.

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