@rpwun4 if you were just diagnosed 5 days ago you have other worries right now. I hope you can eat what you want and what gives you pleasure for now ...

I have cut down on my animal proteins. I definitely have a vegan day a week. I follow the cancer dietician on line and "Eat the rainbow" Not all processed foods are bad (you have to read labels). I eat fresh when I can, cheat occasionally but recover swiftly. I am mindful of what I eat

Vegan/vegetarian is not necessary, nor is it the answer to breast cancer. I have a lady in our cancer group that has never eaten meat of any kind in her life, as her parents were the same. She thrived on healthy and strong and did all the careful little things that I don’t have the energy or budget for. She got breast cancer at 40,
I do feel like we can make our lives better and our bodies stronger by eating the best that we can, and keeping our bodies as healthy as we can. This also helps when we do get cancer, being otherwise healthy might be the thing that gets us through it all.
If you are doing the navy version (love the term), you have plenty to think about without trying to change your entire diet. My guess is that you are already stronger than many who are joining this awful club, if you eat with an eye to healthy that’s all you can ask of yourself.
This is a time for absorbing the diagnosis, how are you feeling? Have you wandered around other conversations on connect ?