LOS ANGELES (June 27 - 2007) - According to a pilot study released in the International Journal of Impotence Research (http://www.
This randomized, placebo-controlled, double-blind, crossover pilot study examined the efficacy of pomegranate juice versus placebo in improving erections in 61 male subjects. To qualify, participants had to experience mild to moderate ED for at least 3 months; be in a stable, monogamous relationship with a consenting female partner; and be willing to attempt sexual intercourse on at least one occasion per week during each study period.
Mild ED is defined as the mildly decreased ability to get and keep an erection, while moderate ED is the moderately decreased ability to get and keep an erection. The majority of men with ED have moderate ED.
For the first four weeks of the study, the subjects were assigned to drink either 8 oz. of POM Wonderful Pomegranate Juice or 8 oz. of placebo beverage daily with their evening meal or shortly after. After a two-week washout period during which the subjects did not consume any study beverage nor utilize any ED treatment, they were assigned to drink 8 oz. of the opposite study beverage every evening for another four weeks. At the end of each four week period, efficacy was assessed using the International Index of Erectile Function (IIEF) and Global Assessment Questionnaires (GAQ). The IIEF is a validated questionnaire that has been demonstrated to correlate with ED intensity. The GAQ elicits the patient's self-evaluation of the study beverages' effect on erectile activity.
Forty seven percent of the subjects reported that their erections improved with POM Wonderful Pomegranate Juice, while only 32% reported improved erections with the placebo (p=0.058). These results compare favorably to a recent 24-week study using a PDE5 inhibitor (such as Cialis), in which roughly 73% of subjects reported a benefit from the PDE5 inhibitor and 26% reported a "placebo effect" (i.e. experiencing improvement while on the placebo).3
Although the study did not achieve overall statistical significance, the authors conclude that additional studies with more patients and longer treatment periods may in fact reach statistical significance. The strong directional results of this pilot study are encouraging because almost half of the test subjects experienced a benefit simply by adding pomegranate juice to their daily diet, without the use of ED drugs.
Researchers believe that the results might be due to the potent antioxidant content of pomegranate juice, which can prevent free radical molecules from disrupting proper circulatory function. In several previously published medical studies, pomegranate juice has been shown to enhance blood flow and to slow or reverse arterial plaque growth.4, 5, 6 Because an erection requires significant blood flow, these potent pomegranate antioxidants may provide benefit by mitigating arterial plaque and promoting blood vessel dilation.
According to study co-author Harin Padma-Nathan, MD, FACS, FRCS, Clinical Professor of Urology at the Keck School of Medicine, University of Southern California, "These findings are very encouraging as they suggest there is a non-invasive, non-drug way to potentially alleviate this quality of life issue that affects so many men. For men with ED, it is important to maintain a healthy diet and exercise. Drinking pomegranate juice daily could be an important addition to the diet in the management of this condition."
About POM Wonderful
POM Wonderful is the largest producer of California Wonderful pomegranates and the company exclusively grows and sells this variety. POM Wonderful's pomegranates grow in central California, in the sunny San Joaquin Valley. Fresh pomegranates are in season from October through January and November is National Pomegranate Month.
The company also uses its fresh pomegranates to make its delicious, all-natural, POM Wonderful Pomegranate Juice and POMx, a highly-concentrated blend of all-natural polyphenol antioxidants harnessed from the pomegranate by a patent-pending process. POMx is found exclusively in POM Tea, POMx Pills and POMx Liquid.
POM Wonderful Pomegranate Juice and POM Tea are available year-round at retail and are found in the refrigerated section of supermarkets nationwide. POMx Pills and POMx Liquid are available at http://www.
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2 Kaiser FE. Erectile dysfunction in the aging man. Med Clin North Am 1999; 83: 1267-1278.
3 Rajfer J, Aliotta PJ, Steidle CP, Fitch III WP, Zhao Y, and Yu A. Tadalafil dosed once a day in men with erectile dysfunction: a randomized, double-blind, placebo-controlled study in the US. International Journal of Impotence Research 2007, 19: 95-103.
4 Ignarro LJ, Byrns RE, Sumi D, de Nigris F, Napoli C. Pomegranate juice protects nitric oxide against oxidative destruction and enhances the biological actions of nitric oxide. Nitric Oxide 2006; 15: 93-102.
5 Aviram M, Rosenblat M, Gaitini D, Nitecki S, Hoffman A, Dornfeld L, Volkova N, Presser D, Attias J, Liker H, and Liker H. Pomegranate juice consumption for 3 years with patients with carotoid artery stenosis reduces common carotid intima-media thickness, blood pressure and LDL oxidation. Clinical Nutrition, 2004, 23: 423-433.
6 Summer MD, Elliot-Eller M, Weidner G, Daubenmier JJ, Chew MH, Marlin R, Raisin CJ and Ornish, D. Effects of pomegranate juice consumption on myocardial perfusion in patients with coronary heart disease. American Journal of Cardiology 2005, 96: 810-814.