I am 34 and wAs just diagnosed last week. I have been violently sick for years though and finally just figured it out. I have a number of issues going on. Fibrmyalgia, gall bladder just removed, umbilical hernia surgery just recently, severe IBS, and a few other things. I self diagnosed myself through symptoms and research and had my doctor run the tests to confirm yes or no. I was right. I too wondered why it took me so long to be diagnosed. Doesn't matter now, I am here now and have help. I only found out last wednesday.....so I am VERY fresh at this. Good luck!