@cecilbaker55, I moved your question about sugar and cancer to this existing conversation. I encourage you to click the link and read the comments.

- Sugar abstinence for prostate cancer https://connect.mayoclinic.org/discussion/sugar-abstinence-for-prostate-cancer/

There is a lot of myth and misinformation about sugar's role in cancer. For that reason, Mayo Clinic provides this information:
- Sugar's Role in Cancer https://connect.mayoclinic.org/blog/cancer-education-center/newsfeed-post/sugars-role-in-cancer-1/

Eating a heathy diet can reduce the risk of getting cancer and the risk of recurrence. Less sugar is usually part of a health diet.

I don't think you have to give up your beloved blueberries. There is research underlining that berries are good for prostate health. The anthocyanins in blueberries are a type of flavonoid, known for their antioxidant properties and potential health benefits. Research has shown that blueberry anthocyanin can help inhibit the proliferation of cancer cells.
https://newsnetwork.mayoclinic.org/discussion/the-power-of-blueberries/

NO…neither!

My urologist told me that fruit, including berries help with absorption and are good to eat. He gave me one example saying eat an orange instead of orange juice. Both of my doctors mentioned to stay away from red meat, and cured meats like ham and bacon.

Testosterone is the primary fuel feeding prostate cancer. The standard list of drugs to combat this cancer are mostly designed to reduce the production of testosterone. This includes abiraterone, apalutamide, bicalutamide, Casodex, docetaxel, eligard, enzalitamide, apalutamide, jevtan, lupron, extandi, zytiga and so on. A radical orchiectomy is the ultimate attempt to stop testosterone production. Overall diet is important, but testosterone is the key driver.