We had the Royal Marsden book at one time, but there weren't too many recipes we liked, and I think it has gone to the charity shop.
From memory it wasn't a prostate cancer specific book, merely various healthy eating recipes.
I guess what you choose to eat is a matter of personal preference and logic.
I note your OH has had RP and has been on HT in the past, and you are now concerned about rising PSA around 2.5?
The foods that are specifically linked to doing some good in combatting PCa are, all the brassicas particularly broccoli, turmeric especially if it has been cooked in oil, green tea and pomegranate. Onions, garlic, tomatoes and chili also seem to do us some good.
So far as the Jane Plant diet is concerned, the dairy and meat free approach has a logic to it if you are on hormone therapy. There is not a lot of point putting yourself through the anguish of Zoladex or Prostrap if you are going to tuck into a juicy steak oozing testosterone.
You will note that some of the longest serving members of this website like George H, are also keen adherents of the Jane Plant diet, of course it may be a coincidence. I was diagnosed Gleason 9 ten years ago and haven't drunk milk since, once you get used to Green tea it is quite refreshing.
A sensible half way house is to have broccoli or cauliflower at least twice a week, plenty of curries with lots of garlic, chili and turmeric, salads a couple of times a week, fish twice a week, 5 portions of veg per day. Once you have got that lot down your throat there isn't much room for pork pies and cream cakes!
Here is my recipe which provides two big portions of goodness:
Skin and then chop up a whole bulb of garlic, and gently fry in a large pan with two chopped onions in 2 tablespoons of oil.
After 5 minutes when the onions are translucent but before they brown, add 2 or 3 chopped stalks of celery, 2 chopped red or green peppers, 1/2 teaspoon of salt, 1 teaspoon of turmeric, 1 teaspoon of chilli flakes, fry gently for a further 5 minutes.
Add 1 tin of chopped tomatoes and wash out the tin with water, chucking about half a tin of water into the mix, bring to the boil and simmer with the lid on the pan for about an hour, then turn off the heat and leave the mix cool.
20 minutes before you are ready for it, add a drained can of lentils, red kidney beans or similar, and put the pan back on the heat to warm through.
If I know I am going to use lentils I add a teaspoon of cumin at the frying stage and call it dhal, alternatively if I am using kidney beans I chuck in a teaspoon of smoked paprika and call it vegetarian chilli.
It may not cure cancer, but all that garlic and chili certainly keeps the moths away, I haven't had a cold this winter.