Because of what I read here I did some serious internet searches on this subject. What I found is that Anastrozole and Letrozole are nonsteroidal while Exemestane is a steroid. All three work similarly. I found not one single (credible) article mentioning avoiding any type of food. There's plenty of information on drug interactions but none on food. When I first started started AIs (I've used all three), logic indicated I avoid soy products. I then began seeing articles disputing this. I've had four oncologists over 5 years, and not one mentioned avoiding any types of food. I also found that they are not god-like, don't all agree, and don't always have all of the answers. I ask, I listen and I do my own research. When I developed chemo induced neuropathy, 2 oncologists diagnosed fluid retention. I self-diagnosed neuropathy which was later confirmed when I joined a clinical trial for neuropathy. So, don't take everything as gospel.