I’d encourage your husband to continue with the Mediterranean Diet. I’ve been on it for two years. I decided to go on it after learning there was cancer in one of eight lymph node samples, which were tested after my surgery. I was hoping to avoid radiation and hormone shots to prevent my cancer from spreading . The good is — I have. My PSA tests showed my cancer is undetectable. I wish your husband success in eliminating and/or controlling it. A Mediterranean Diet is a great way to go!