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TerminatedNCT00693082Updated Nov 20, 2012

Polycystic Ovarian Syndrome: Impact of Flaxseed Supplementation

A Phase 2 interventional study of flaxseed in Polycystic Ovarian Syndrome, sponsored by Duke University. Terminated at 1 site in United States. Open to female participants aged 18 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2012-11-20.

Sponsored by Duke University · Phase 2, Interventional, and Treatment

Why this study was terminated
recruitment and pilot funding issues
Phase
Phase 2
Study type
Interventional
Enrollment
4
Allocation
Not applicable
Ages
18 Years to 45 Years
Sex
Female
01

Study summary

The overall aim of this study is to explore the effects of flaxseed supplementation and determine whether it is a feasible and potentially effective dietary intervention among women with polycystic ovarian syndrome (PCOS). Women, ages 18-45, with clinically confirmed PCOS (N=20) will be scheduled for baseline measures and then instructed and given supplies necessary to follow a flaxseed supplemented (30 g/day) diet for a period of three months, whereupon follow-up measures will be taken. Subjects will be asked to resume their typical (unsupplemented) diet for another three months and a second set of follow-up measures will be taken. Baseline levels of bioavailable and total testosterone, fasting insulin, glucose, and triglycerides (TG), total/LDL/HDL cholesterol, body weight, degree of hirsutism and acne, and menstrual cyclicity will be compared to levels at 3 and 6 month follow-up. The overall hypothesis (based upon our work in men at risk for prostate cancer and data from one case-study conducted in a woman with confirmed PCOS) is that during the time women receive flaxseed supplementation they will experience reduced serum levels of testosterone, and total and LDL cholesterol, as well as clinical evidence of hirsutism. Given the pilot nature of this study, statistical analyses will be limited to simple descriptive statistics. We have observed no negative side effects, other than minor gastro-intestinal occurrences (i.e., temporary increased flatulence, borborygmi, increased number of stools, etc.) associated with flaxseed supplementation in our previous studies either with short or long-term use. Flaxseed supplementation will be discontinued if indicated and the events reported to the institutional review board.

02

Conditions studied

  • Polycystic Ovarian Syndrome

Keywords

  • PCOS
  • flaxseed
03

In context

Polycystic Ovary Syndrome

944 studies on the registry are indexed under Polycystic Ovary Syndrome; 174 are open to participants now.

This study's enrollment of 4 is below the median of 70 across 685 interventional studies indexed under Polycystic Ovary Syndrome.

Browse Polycystic Ovary Syndrome studies →

Lead sponsor

Duke University is the lead sponsor of 2,025 studies on the registry; 275 are open to participants now.

Of its 194 completed or terminated interventional studies of FDA-regulated products, 159 (82%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Inclusion criteria

  • limited to women aged 18-45
  • diagnosis of PCOS by menstrual irregularity (fewer than 9 menses annually), Ferriman-Gallwey score > 8, and/or hyperandrogenemia defined as bioavailable T>8.4ng/dL (Zawdaki \& Dunaif 1992)
  • mentally competent
  • English speaking/writing
  • telephone access and/or email access

Exclusion criteria

Exclusion Criteria:

  • Use of oral contraceptives, spironolactone or insulin-sensitizing agents within the past 3 months;
  • Long-term or chronic use of oral antibiotics;
  • Diagnoses of hyperprolactinemia, thyroid abnormalities, or nonclassic adrenal hyperplasia;
  • Hysterectomy;
  • Onset of menopause;
  • Pregnancy/Lactation;
  • Consumption of flaxseed within the past month; and
  • Use of any dietary fiber supplements which are newly started (within the past 6 months) and agreement not to use any new fiber supplements during the study period
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
4 participants (actual)

Study arms

  • Experimental
    1

    Dietary Supplement: flaxseed

Interventions

  • Dietary supplementflaxseed

    1 tablespoon a day for first three days, increasing to two tablespoons a day for the next three days. On the 7th day start with 3 tablespoons per day and maintain dose throughout the duration of the study (11 weeks).

06

What researchers measure

Primary outcomes

  1. To explore the effects of flaxseed supplementation on women with clinically confirmed PCOS.

    Time frame: baseline, 12 weeks, 24 weeks

07

Study locations

1 site
  • Duke Univeristy Medical Center
    Durham, North Carolina 27710, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 20, 2012, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00693082
Lead sponsor
Duke University
Responsible party
Sponsor
First posted
Jun 6, 2008
Start date
Aug 2007
Primary completion
Jun 2009
Completion
Jun 2009
Last update
Nov 20, 2012

Study contacts

Susan M Schneider, PhD
principal investigator · Duke University

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Nov 2012. You cannot join it, but the record below documents what was studied.

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