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Energy Deficiency on Hormones in Contraceptive Users

NCT07651800 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2026-06-16

No results posted yet for this study

Summary

The purpose of the present study is to characterize the endocrine and metabolic responses to a modest, short-term energy deficiency (\~250 kcal/day) across the menstrual cycle in recreationally active women using different contraceptive methods (oral contraceptive, hormonal IUD, and non-hormonal IUD). This study will leverage daily urinary hormone metabolite tracking and comprehensive metabolic assessments, providing foundational data addressing an important and previously unexamined interaction between energy availability and hormonal regulation in contraceptive users.

Conditions

  • Energy Deficiency Due to Short-term Fasting
  • Hormonal Contraception

Interventions

BEHAVIORAL

Energy Deficiency of approximately ~250 kcal/day

Following an initial baseline menstrual cycle, participants will be subjected to at least two weeks of a \~250 kcal/day energy deficit monitored through daily diet tracking.

Sponsors & Collaborators

  • University of Southern California

    lead OTHER

Study Design

Allocation
NON_RANDOMIZED
Purpose
SCREENING
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
35 Years
Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-09-30
Primary Completion
2027-06-30
Completion
2027-12-31

Countries

  • United States

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07651800 on ClinicalTrials.gov