14 patients with crystal proven gout participated in this study. 9 of them were given 1 table spoon cherry juice concentrates (equivalent to 45 to 60 cherries) twice a day and 5 of them were given same amount of pomegranate juice concentrates (1 tbsp equivalent to 1 pomegranate) for 120 days. The patients taking cherry juice had a significant decreasing in the number of gout flares, which was not seen on the patients consuming pomegranate juice. 5 out of 9 patients were even free of flare and stopped NSAIDs (non steroidal anti-inflammatory drugs) intake. One interesting discovery is that even though cherry juice shows significant positive effect, it did not reduce the uric acid level. Therefore the authors believe the real magic behind is its anti-inflammatory actions such as inhibition of IL-1β secretion.
The study was small and short term (just 4 months), like the title said 'pilot study'. But I think it makes sense. It explains why many people reduced the pain of acute gout attack after they drank cherry juice. It probably has some effects similar to the NSAIDs but it is better because it is natural.