Volume 2, Issue 2 (May 2017)                   JNFS 2017, 2(2): 165-172 | Back to browse issues page

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Mozaffari-Khosravi H, Fallahi M, Afkhami-Ardekani M. Effect of Oral Supplementation of L-arginine on Sexual Function in Men with Type 2 Diabetes: A Double-blind Clinical Trial. JNFS. 2017; 2 (2) :165-172
URL: http://jnfs.ssu.ac.ir/article-1-76-en.html

Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
Abstract:   (391 Views)

Background: Sexual dysfunction is an important health problem which prevalence in patients with type 2 diabetes (T2D) is higher than other people. The aim of this study was to evaluate the effect of L-arginine oral supplementation on sexual function in men with T2D and mild-to-moderate erectile dysfunction (ED). Methods: Eighty men with T2D, suffering from mild-to-moderate erectile dysfunction participated in this double-blind clinical trial. They were randomly assigned in to two groups; receiving 5 g/day L-arginine (AG) or placebo group (PG) for 4 weeks. Sexual functions were recorded with international index of erectile function questionnaire at the beginning and end
of the intervention.
Total testosterone concentrations were measured too. Results: The total mean score of sexual function parameters significantly increased only in AG than PG (43.2 ± 6.2 vs. 39.4 ± 4.0, P = 0.003). Against PG, the mean of all parameters significantly improved in AG after intervention. Only the mean score of erectile function in AG had a significant increase compared to PG. Mean of other sexual activity scores between the two groups had no significant differences. The mean of testosterone concentration had a significant increase in both groups after the intervention, but the mean of changes was significantly higher in AG than in PG (1.91 μg/L vs. 0.53 μg/L, P = 0.004). Conclusions: The present trial showed that daily consumption of 5 g L-arginine for four weeks in T2D men with mild-to-moderate sexual dysfunction improved various parameters such as erectile function, sexual satisfaction, sexual desire, pleasure from sexual intercourse, and testosterone level.

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Type of article: orginal article | Subject: public specific
Received: 2016/10/24 | Accepted: 2017/01/5 | Published: 2017/05/1

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