There are many factors involved but yes, reducing the hormones affecting your breast tissue will help reduce new or recurring cancers. I had Lobular Cancer (not ductal)....not sure what your type of cancer is...but Lobular, the type I had tends to show up in both breasts over time. Ductal is not so likely to do that. That was a main factor in my decision making regarding the bi lateral mastectomy......I had cancer over two years in both breasts. That doesn't necessarily happen as often with ductal types of cancer. The AI drugs are recommended for women with all breast cancers. If you reduce the hormones, you reduce the chance of new cancer or the cancer recurring. I do feel trying the drugs is a good idea. Many women use them with minimal or no side effects. Talk with your doctors about your type, stage and chance of additional cancers in the future. Ask questions and make sure you get answers you understand and feel comfortable with. I was lucky to have a very good oncologist and surgeon when I was first diagnosed who were very open minded and helpful. My second time around with the second breast cancer I also had a great oncologist (who I have now) who was helpful with information on reducing risks of cancer coming back. Make sure you have doctors you can talk with and feel comfortable with.....it's very important for your mental health. Also, check out the conversations here on the Connect site for women discussing and using AI drugs and other information. These are tough decisions. Ultimately you have to decide what's best for you but it's hard to wade through the options when you get a cancer diagnosis, it's so scary and it upends your life. The support on this site, from other women going through this, was invaluable to me and that's why I'm happy to share my experience and thoughts. It's most important you feel your doctors are listening to you and offering you the support and information you need but it's still, in the end, your decision and that can be very stressful. Hugs