Clinical trial Recruiting at 1 site Interventional Ages 18 to 80 Men only

Impact of Mediterranean Diet on Prostate Cancer Surgery Outcomes

Official title: Metabolic Impact and Compliance of Controlled, Varying, Mediterranean Diets in Pre-Surgical Prostate Cancer Populations (PROVISIONS)

Run by University of Miami · NCT06487507 · Data updated 2026-11-12

This study tests whether following a Mediterranean-style diet can improve health and surgery results for men with prostate cancer before they have surgery.

More Prostate Cancer trials

Quick facts

Study typeInterventional
Ages18 Years to 80 Years
SexMen only
Enrollment20 (estimated)
SponsorUniversity of Miami
Academic / other
Drugs / interventionsradiation
Locations1 site (Miami, Florida)
StatusRecruiting
StartedApril 17, 2025
Main results expectedMay 1, 2027
Study endsMay 1, 2027
Registry record updatedApril 23, 2026
Trial IDNCT06487507 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are males aged 18 to 80 with a BMI between 18.5 and 40 who are scheduled for radical prostatectomy.

Probably not a fit

Patients currently following a Mediterranean, lower carbohydrate, ketogenic, vegan, vegetarian, or high fiber diet may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the effects of a controlled Mediterranean-style diet on fasting insulin levels and other measurable health indicators in men diagnosed with prostate cancer who are scheduled for robotic-assisted radical prostatectomy. Participants will follow either a low fat or lower carbohydrate diet prior to their surgery. Blood and tissue samples will be collected during surgery to assess the metabolic impact of the dietary interventions. The study aims to determine if dietary changes can influence surgical outcomes and overall health in this patient population.

Why it matters

Potential benefit: If successful, this study could lead to dietary recommendations that improve surgical outcomes and metabolic health for prostate cancer patients.

How similar studies have gone: While there is ongoing research into dietary impacts on cancer treatment, this specific approach to a Mediterranean diet in pre-surgical prostate cancer patients is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Males 18 to 80 years old scheduled to undergo radical prostatectomy as per standard of care.
* BMI between 18.5 and 40
* Ability to read, write, speak, and understand English and/or Spanish.
* Ability to provide informed consent.
* Willingness to consume provided dietary interventions.
* Adequate organ and marrow function as assessed by treating clinician(s) which includes: White blood cell count (WBC) ≥2,500/microliter. Absolute neutrophil count (ANC) ≥1,500/microliter. Platelets ≥100,000/microliter. Hemoglobin ≥9 g/dL (transfusions permitted) Total bilirubin ≤1.5 x the institutional upper limit of normal (ULN). For subjects with Gilbert's disease ≤3.0 mg/dL. Aspartate aminotransferase (AST)/Alanine aminotransferase (ALT) ≤2.5 x institutional ULN. Creatinine clearance ≥51 ml/min as defined by Cockcroft-Gault equation.

Exclusion Criteria:

* Currently consuming a Mediterranean, lower carbohydrate, ketogenic, vegan, vegetarian, high fiber diet (14g fiber \> per 1,000 Calories) and/or any supplements (including herbal), vitamins, minerals, that would interfere with diets being tested in the study as determined by dietitian and/or investigators as these diets are highly restrictive and may impact objectives/outcomes in the trial.
* Previous intolerability to fiber-rich diets.
* Colitis, Irritable Bowel Syndrome, or other gastrointestinal condition per clinician discretion.
* Food allergies or other major dietary restrictions.
* Receiving active medical treatment for Type I or Type II diabetes mellitus.
* Recent weight loss or gain (both intentional and unintentional) as defined by 5%+ body weight in the last 30 days.
* Undergone any type of weight loss surgery.
* Any medical contraindications as determined by investigators.
* History of diabetic ketoacidosis.
* History of Gout.
* Patients that are immunosuppressed (transplant history, on immunosuppression, etc.) as per clinician discretion.
* Gallbladder removed or plan to remove per clinician evaluation.
* Other malignancies actively receiving systemic treatment as per clinician evaluation.
* Previous treatment for prostate cancer.
* Previous history of pelvic radiation.
* Patients with impaired decision-making capacity.

Where it's running

  • University of Miami
    Miami, Florida, United States
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.