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The Effects of the Mediterranean Diet and Synbiotics in Polycystic Ovary Syndrome

Effects of a Mediterranean Diet and Synbiotic Supplementation on Anthropometric and Biochemical Parameters and Quality of Life in Obese Women With Polycystic Ovary Syndrome

Status
Not yet recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07342946
Enrollment
32
Registered
2026-01-15
Start date
2025-12-20
Completion date
2027-08-01
Last updated
2026-01-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

PCOS (Polycystic Ovary Syndrome)

Keywords

synbiotics, pcos, diet, nutrition

Brief summary

This study will look at whether a reduced-calorie Mediterranean-style eating plan, together with a synbiotic supplement, can improve health measures and quality of life in women who have polycystic ovary syndrome (PCOS) and are overweight or have obesity. Participants will be assigned by chance (like flipping a coin) to receive either the synbiotic supplement or a placebo (a look-alike product with no active ingredients). All participants will follow the same reduced-calorie Mediterranean diet for 8 weeks. The study team will measure body composition and weight-related measurements, and will collect blood samples to evaluate selected laboratory markers before and after the 8-week period. Participants will also complete the PCOSQ-50 quality-of-life questionnaire before and after the intervention. The goal is to better understand the possible role of synbiotic supplementation alongside dietary treatment in PCOS.

Detailed description

This randomized, placebo-controlled, single-blind clinical trial is designed to evaluate the effects of a hypocaloric Mediterranean diet combined with synbiotic supplementation on anthropometric measurements, biochemical parameters, and quality of life in overweight and obese women diagnosed with polycystic ovary syndrome (PCOS). Eligible participants will be randomly assigned to one of two study arms: a synbiotic supplementation group or a placebo group. Both groups will follow the same hypocaloric Mediterranean diet throughout the 8-week intervention period. Anthropometric assessments, including body weight, body mass index, waist circumference, and body composition, will be performed at baseline and at the end of the intervention. Biochemical parameters will be evaluated through blood samples collected at baseline and after 8 weeks. Quality of life will be assessed using the PCOSQ-50 Quality of Life Questionnaire at both time points. The study aims to determine whether the addition of synbiotic supplementation to a hypocaloric Mediterranean diet provides additional benefits in the management of PCOS-related metabolic parameters and quality of life compared with dietary intervention alone.

Interventions

DIETARY_SUPPLEMENTSynbiotic Supplement

Participants in this arm will receive a hypocaloric Mediterranean diet in addition to synbiotic supplementation for a period of 8 weeks.

OTHERPlacebo

Participants in this arm will receive a hypocaloric Mediterranean diet in addition to a placebo for a period of 8 weeks.

Sponsors

Atlas University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 45 Years
Healthy volunteers
No

Inclusion criteria

* Premenopausal women who are overweight or obese, with a body mass index (BMI) between 25 and 35 kg/m² * Aged 18 to 45 years (reproductive age) * Diagnosed with polycystic ovary syndrome (PCOS) No underlying metabolic diseases, including type 2 diabetes mellitus, hypertension, diagnosed anemia, or any other metabolic condition requiring a special diet

Exclusion criteria

* Pregnancy or breastfeeding within the past 6 months * Presence of comorbid conditions, including kidney, liver, or cardiovascular disease, gout, hyperuricemia, or other related disorders * Use of oral contraceptives * Following a special dietary treatment or a hypocaloric diet within the last 3 months * Occasional or current use of medications that may affect fluid balance, including diuretics and laxatives * Participants will be withdrawn from the study in case of abnormal biochemical parameters, non-adherence to the prescribed diet, or failure to comply with the supplementation protoco

Design outcomes

Primary

MeasureTime frameDescription
Change in body weightFrom enrollment to the end of treatment at 8 weeksChanges in body weight measured in kilograms using the Tanita MC-780 bioelectrical impedance analysis (BIA) device at baseline and after the 8-week intervention.
Change in body mass index (BMI)From enrollment to the end of treatment at 8 weeksChanges in body mass index (BMI), calculated as weight in kilograms divided by height in meters squared (kg/m²), with body weight measured using the Tanita MC-780 bioelectrical impedance analysis (BIA) device at baseline and after the 8-week intervention.
Change in body compositionFrom enrollment to the end of treatment at 8 weeksChanges in body composition parameters, including fat mass and fat-free mass, assessed using the Tanita MC-780 bioelectrical impedance analysis (BIA) device at baseline and after the 8-week intervention.
Change in waist circumferenceFrom enrollment to the end of treatment at 8 weeksChanges in waist circumference measured in centimeters using a non-elastic measuring tape at baseline and after the 8-week intervention.
Change in hip circumferenceFrom enrollment to the end of treatment at 8 weeksChanges in hip circumference measured in centimeters using a non-elastic measuring tape at baseline and after the 8-week intervention.

Secondary

MeasureTime frameDescription
Change in fasting blood glucoseFrom enrollment to the end of treatment at 8 weeksChanges in fasting blood glucose levels measured in mg/dL from venous blood samples collected at baseline and after the 8-week intervention.
Change in quality of lifeFrom enrollment to the end of treatment at 8 weeksChanges in quality of life assessed using the Polycystic Ovary Syndrome Quality of Life Questionnaire (PCOSQ-50), a validated disease-specific instrument consisting of 50 items across six domains: psychosocial and emotional well-being, fertility, sexual function, obesity and menstrual irregularity, hirsutism, and coping with the disease. Each item is scored on a 5-point Likert scale ranging from 1 (always) to 5 (never), resulting in a total score range of 50 to 250. Higher scores indicate better quality of life. Domain scores are calculated as the mean of the items answered within each domain, excluding unanswered items. Assessments will be performed at baseline and after the 8-week intervention.
Change in insulin resistance (HOMA-IR)From enrollment to the end of treatment at 8 weeksChanges in insulin resistance assessed using the Homeostatic Model Assessment of Insulin Resistance (HOMA-IR), calculated from fasting plasma glucose and fasting insulin levels. A HOMA-IR value below 2.5 will be considered indicative of the absence of insulin resistance. Measurements will be performed at baseline and after the 8-week intervention.
Change in lipid profileFrom enrollment to the end of treatment at 8 weeksChanges in serum lipid profile parameters, including high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), triglycerides (TG), and total cholesterol, measured in mg/dL from venous blood samples collected at baseline and after the 8-week intervention.
Change in follicle-stimulating hormone (FSH) levelsFrom enrollment to the end of treatment at 8 weeksChanges in serum follicle-stimulating hormone (FSH) levels measured from venous blood samples collected at baseline and after the 8-week intervention.
Change in luteinizing hormone (LH) levelsFrom enrollment to the end of treatment at 8 weeksChanges in serum luteinizing hormone (LH) levels measured from venous blood samples collected at baseline and after the 8-week intervention.

Contacts

Primary ContactAyşenur Emirhuseyinoglu-Calik
ayse.emirhuseyinoglu@atlas.edu.tr+905315239218

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026