Sorry guys, there is not a scintilla of medically acceptable evidence that diet makes any difference to PCa. This also applies to pomegranate juice and products based upon it, whether supported by a UK consultant or not.
So far as heart health is concerned, there is increasing though not conclusive evidence that dairy products, notably butter, have been much maligned. Regarding red meat, this certainly has a place in a balanced diet. Avoiding it in total is unjustified. The golden rule is adopt a balanced diet and regular exercise to keep your heart healthy and thus make it more likely that you fall prey to some other ailment than heart disease or PCa in the fullness of time.
About every month or so, someone writes on here's though there is a magic formula involving supplements or other dietary fads which makes a difference. There isn't, except as a means of enriching snake oil salesmen and impoverishing PCa survivors.
I write as an innocent who went through this loop ten years ago when newly diagnosed, in a sense of desperation, before I did my research and discovered that I was wasting my money. Instead I lost weight, adjusted my diet and exercised regularly with the help of an energetic dog!