I learned of my prostate cancer metastasis about ten years ago in 2012, which was four years after radiation therapy to my prostate in 2008, following a urinary blockage and biopsy Gleason 8. I chose RT over surgical as my mets were microscopic, confined to prostate. The discovery of Stage 4 was after my PSA went from under 0.5 for three years to 4, and then 10, my RO told me I was coming due for hormone therapy. He gave me the choice of "continuous" or "intermittent". I chose intermittent, which back then meant three injections, 90 days apart, roughly two years between series as my PSA monitoring gave me timing. I am now (past two years) taking Lupron hormone therapy continuously, an injection every three months.
Long story short, over the years I self-experimented with many dietary supplements and pseodo-cures, like asparagus, apricot seeds, garlic, dandelion root tea, lemon grass, wormwood, antioxidant supplements, etc. Nothing seemed to make much difference except lycopene.
LYCOPENE
Lycopene, as in heated tomato based foods, (tomato soup, pasta sauce, catsup, taco sauce, etc.) reduced inflammation at pain spots in my back, lymph nodes mostly. Also with internet reading, I learned that lycopenes cause prostate cancer cells to apoptize (die) and reduce proliferation. Recent example: sciencedirect.com/science/a...
I learned through the years that lycopenes did not cure, although they did slow down the PC cell division, and kept my tumors small. Consequently, I dropped all those pseudo-cures and focused on lycopenes, but gradually continued searching internet for additional approaches.
HEAT
I discovered something quite incredible but intriguing, that heat kills cancer cells. In fact it has been known since the 1920's that 106 degrees F is all it takes to kill cancer. Armed with this radical concept, I applied heat in various ways, to my pain points to find that the pains disappeared...temporarily. After repetitive applications, they disappeared, completely. My main methods included hot showers, heating pads, and metal plates. I measured temperatures fairly carefully, with shower water temperatures up to 120 degrees, heating pads up to 150, with cloth buffers, and steel 2.5 lb weights similar.
MAGNETS
Continuing my search for a permanent cure, I researched the wild idea that magnets might cure cancer. Sure enough I found that someone had studied that possiblity and concluded that South magnetic fields DID cause cancer remission. In fact, one man with prostate cancer was able to lower his PSA by sleeping on a magnetic mattress for several months. With this bit of information, I purchased some refrigerator magnets and began taping them to my sore spots, inflamed lymph nodes generally. I found that if I could manage to find a good waterproof tape, and if I could keep the magnet on top of the sore spot for at least two days, the soreness disappeared. So the good news was that it worked. Unfortunately, the small size of the refrigerator magnets allowed the cancer tumors to spread around them, so they came back in time.
CONCLUSION
I don't use magnets any more, but I do continue to use lycopenes and heat regularly. Most of my tumors are no longer there. A couple of more progressed tumors have survived my attacks for years. But I feel I am winning the battle. I hope this helps others in their battle against the monster.
Too many vitamins ? 
Sources of PSA During ADT Break
rising psa but scans are clear
High Gleason low PSA - quit ADT? 
