Cancerify Logo
Log inSign up
Back to clinical trials
RecruitingInterventionalPhase 2

WALNUTS for POWER: Polyphenols, Omega-3 Fatty Acids, Weight Loss, and EneRgy

NCT ID: NCT03824652Sponsor: Stephen FreedlandLast updated: 2026-05-07

Summary

This is a randomized control trial testing the effect of walnut supplementation on prostate cancer progression in 50 men with biopsy confirmed prostate cancer and planning to undergo RP. Patients consented to the study will be randomly assigned to either continue their usual diets (control arm) or to the walnut arm for 4-10 weeks depending on the window between their consent date and the date for RP.

Detailed description

The overall objective of this study is to test the effect of walnuts added to a usual diet on prostate cancer progression as measured by Ki67 expression in the prostate tissues. Subjects will be randomized 1:1 to usual diet or usual diet with the addition of 2 ounces of walnuts daily. The baseline visit will occur in conjunction with a standard of care visit post-biopsy, the intervention period will range from 4-10 weeks dependent upon the scheduled date of the standard of care radical prostatectomy (RP), and the final visit will occur in conjunction with a standard of care visit prior to RP.

Arms & interventions

  • Otherwalnuts

    2 ounces of walnuts daily for 4-10 weeks

  • Otherusual diet

    Subject continues usual diet

  • Otherphone counseling with dietitian

    Weekly calls with dietitian

Outcome measures

Primary

  • Mean difference in prostatic tissue Ki67 expression from baseline biopsy to RP

    Time frame: 10 weeks

Secondary

  • Mean difference in prostatic tissue oxidative stress from baseline biopsy to RP

    Time frame: 10 weeks

  • Mean difference in prostatic tissue inflammation from baseline biopsy to RP

    Time frame: 10 weeks

Eligibility criteria

Sex: MaleAge: 18 Years and olderHealthy volunteers: No
Inclusion Criteria: * Pathologically confirmed prostate adenocarcinoma. * Diagnostic biopsy cores with ≥10 cores with each core examined separately to determine exact tumor location. * Biopsy grade group 2 or higher (Gleason ≥7). * Planning to undergo RP. * Willing to adhere to a usual diet with the possible addition of 2 oz of walnuts per day. * Reads, writes, and understands English. * Age 18 or older Exclusion Criteria: * Allergy to nuts. * History of receiving hormone therapy or antiandrogen therapy. * Use of 5-alpha reductase inhibitors in the past 6 months. * Prior prostate radiotherapy (external beam or brachytherapy) or prior prostate cryotherapy. * Currently enrolled in a modified diet/weight loss program and/or taking dietary supplements that contain omega-3s (e.g., fish oil). * Other active malignancy, excluding basal cell carcinoma or squamous cell carcinoma * Significant co-morbidities (e.g., cardiac, pulmonary, liver disease, alcohol/drug addiction, malabsorption syndromes), that in the opinion of the study physician make the patient ineligible. * Individuals with psychological/mental conditions which can affect the consent process and/or their adherence to the protocol.

Study locations (1)

Cedars-Sinai Medical Center

Los Angeles, California, 90048

Recruiting
Kara Bissell · Contact
424-314-0743kara.bissell@cshs.org
Stephen Freedland, MD · Principal Investigator
WALNUTS for POWER: Polyphenols, Omega-3 Fatty Acids, Weight Loss, and EneRgy | Cancerify