I haven't heard that, either. I have heard that it has anti-inflammatory properties, which could indirectly reduce pain that arises from inflammation, such as arthritis. Here's one article describing it.

http://content.time.com/time/health/article/0,8599,1910028,0...

Your comment is quite brief (as is the one you're responding to, for that matter). Is there something in particular you have in mind?