have been taking Anastrozole for 21 months. I told my oncologist I was going to stop it. He didn't agree. If I take the Anastrozole for five years I have a 3% chance of cancer coming back in my body. If I only take it two years i have a 6% chance. I am having tremendous joint pain and my arthritis was never an issue before until now. Had a follow up with my gastrointestinal dr. and my stomach lining was badly inflamed which is another side affect. This medication causes trigger finger as well which is painful. Now I have diabetes which I never had before. My blood glucose started changing when I started taking the Anastrozole. My oncologist said nothing about it, he doesn't treat diabetes and they don't associate this drug with diabetes. I found on the Mayo clinic website that women over 60 have a high chance of getting type 2 diabetes.