It isn't as straightforward as just red meat - it is the muscle meats that cause concern due to growth hormones. Offal is thought to be fine. Milk obviously contains lots of natural growth hormones as well.
People have to be able to enjoy life as well, though. There are many members here who swear by the Jane Plant diet - Jane apparently cured herself of metastatic breast cancer by cutting out all red meat & dairy and eating lots of tomatoes & garlic; she was a doctor but not of medicine and she did eventually die but her books are very popular. In the early days I tried to stop J eating all red meat & dairy but discovered after a couple of years that he was cheating whenever I turned my back. Now we eat sensibly, try not to eat too much red meat, he has lots of soya (Prostate Cancer Research Foundation UK doesn't agree with the man in the Youtube link), onions, processed tomatoes, etc. I am much more concerned now with where the food comes from - I buy organic wherever possible to minimise the amount of chemicals we are consuming, and we don't eat or drink anything that has been in clingfilm or plastic wrappings. Burnt food is a big no-no.
I know they don't have full medical evidence for this yet but I do believe that they will eventually prove the link between old fashioned cooking styles and prostate cancer - the way our mothers may have used the same chip pan fat for months, scraped the burnt bits off the toast, wrapped our sandwiches in cling film, etc.