Americans and Canadians do eat a lot of meat, but I'm not ready to go vegetarian. Diet doubtless has a role in developing prostate cancer (looks like calcium, too, may contribute), but so do genetics and being sedentary.
I grew up in a family with lots of farmers (my parents were school teachers) and meat was the centerpiece of every meal. I've since modified my diet to include more fish, much less red meat and increased numbers of fruits and vegetables. Part of this is because my wife--a lovely Swede--is not a big fan of meat.
What seems to me the most practical and healthy of all the cuisines I've read about is Mediterranean (Eat, Drink and Be Healthy by Walter Willett of Harvard University). That said, I love Italian and Chinese food, too. Actually, I love good food, period!
I am more conscious of what I eat since getting pc (prostate cancer,not politically correct) and get about 60 minutes of exercise most days, as I have for years.
With any luck, a vaccine is in the research pipeline so our sons and grandsons are not afflicted with this dread disease.