Further to Becky's comments this thread may help.
It is complex but balancing the Omega 3s and 6s, and ensuring a supply of long chain Omega 3s EPA and DHA (found in Fish Oil) can help with pain and joint issues.
I Know it sounds unlikely but fats have a huge influence in the structure and function of the body.
http://her2support.org/vbulletin/sho...ght=greek+diet