NCT05590624 · Case Comprehensive Cancer Center
Metabolic Impact of Prospective Controlled Mediterranean Type Diets on Prostate Cancer
What this study is about
The purpose of this study is to examine the impact of Mediterranean-type diets on the metabolism of men with localized prostate cancer. The optimal diet for men with a suspected diagnosis of Prostate Cancer (PCa) is currently unknown. More specifically, the suggested benefits of low carbohydrate and low fat diets in PCa are not determined.
View original scientific description
The purpose of this study is to examine the impact of Mediterranean-type diets on the metabolism of men with localized prostate cancer. The optimal diet for men with a suspected diagnosis of Prostate Cancer (PCa) is currently unknown. More specifically, the suggested benefits of low carbohydrate and low fat diets in PCa are not determined.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Males ≥18 years old
- High suspicion of prostate cancer (PCa) per urologist's clinical evaluation
- No prior PCa diagnosis or hormonal therapy (-ies)
- Ability to read, write, speak, and understand English
- Ability to provide informed consent
- Candidate for and elects active surveillance (AS) if diagnostic biopsy is positive
- Willingness to consume provided dietary interventions
- Adequate organ and marrow function: White blood cell count (WBC) ≥2,500/mcL, Absolute neutrophil count (ANC) ≥1,500/mcL, Platelets ≥100,000/mcL, 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.
- Previous intolerability to fiber-rich diets
- Colitis, Irritable Bowel Syndrome, or other gastrointestinal condition per clinician discretion
- Unwilling to undergo transperineal PCa biopsies
- Food allergies or other major dietary restrictions
- Receiving active medical treatment for Type I or Type II diabetes mellitus
- Prior antibiotic usage (i.e. within last 30 days) at time of consent
- Recent weight loss (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
- High risk as defined by PSA≥20 and/or PI-RADS 5 lesion as per clinician evaluation
- History of diabetic ketoacidosis
- Patients that are immunosuppressed (transplant history, on immunosuppression, etc.) as per clinician discretion
- Recent (within last 30 days) device implant/joint requiring antibiotics as per clinician determination
- Prior history of prostate biopsy infection
- Uncontrolled hypertension as defined by blood pressure greater than 140/80 (with or without medication)
- Gallbladder removed or plan to remove per clinician evaluation
- Other malignancies actively receiving systemic treatment as per clinician evaluation
Where
- Cleveland, Ohio
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Feb 19, 2026 · Source of record for eligibility and locations