Evidence Hub

The effect of vitamin D supplementation on the progression of benign prostatic hyperplasia: A randomized controlled trial

Abolfazl Zendehdel, M. Ansari, F. Khatami, Shapour Mansoursamaei, Hossein Dialameh

Clinical Nutrition, 2020

108 participants · 16 citations

Abstract

BACKGROUND AND AIMS

Inflammation and proliferation are the cause of benign prostatic hyperplasia (BPH) and are the key components of its mechanism of action. In this study we sought to determine the role of 25-hydroxyvitamin D in BPH, because of its anti-inflammatory activities, and its effect on prostate volume and BPH symptoms.

METHODS

This randomized clinical trial (RCT) was conducted on 108 participants >50 years of age who had either asymptomatic or mild BPH symptoms according to the International Prostate Symptom Score (IPSS) questionnaire. Patients were randomly divided into two groups, intervention and control. The intervention group received 50 000 units of vitamin D3 and the control group received a placebo every two weeks for six months. Prostate ultrasound, routine clinical examinations, toucher rectal (TR), and laboratory tests were performed for all patients. After six months, the patients underwent another ultrasound evaluation, measurement of prostate-specific antigen (PSA) levels and completed the IPSS. Results of the evaluations before and after the intervention were compared between the groups using the chi-square, t-test, and logistic regression analysis. Repeated measure analysis was used to evaluate the effect of vitamin D intervention on the changes in the IPSS score.

RESULTS

The mean age of the participants was 56 ± 9 years. In the control group, the mean prostate volume was higher compared to the intervention group (p < 0.001). The control group had…

How strong is the evidence?

Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 108 participants or records.

How the five levels of evidence work. The level is assigned automatically from the abstract and can be wrong, so check the paper.

Read the paper

Related studies

Go deeper in Evidence Hub

Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.

Open this study Sign up free