It’s hard to recommend anything when you’ve supplied no information about what’s going on with your cancer.

What treatment did you have? What was your Gleason score and PSA at diagnosis? True, your decipher results do not look good but you still have a long time ahead of you, just make sure to get treatment, not avoid it.

Mine has come back multiple times, but there’s always another treatment.

Just some supplements, they may or not help you or anyone, but they have some small study at least.
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Boron
Boron Reduces Prostate Cancer Risk
Nothing Boring About Boron
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4712861/
"has demonstrated preventive and therapeutic effects in a number of cancers, such as prostate, cervical, and lung cancers, and multiple and non-Hodgkin’s lymphoma"
Dietary boron intake and prostate cancer risk
https://pubmed.ncbi.nlm.nih.gov/15010890/
http://www.lifeextension.com/Magazine/2015/11/Boron-Reduces-Prostate-Cancer-Risk/Page-01
Brand examples: Trace Minerals Boron (liquid). Lower cost.
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CLA and modified citrus pectin
https://pubmed.ncbi.nlm.nih.gov/14976130/
Both discussed:
https://www.lifeextension.com/magazine/1999/10/report4
Brand examples: Bronson CLA (low to mid cost), Swanson modified citrus pectin (somewhat high cost)
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Neem, Ginger
Neem and Ginger are mentioned in articles for PINs (precursor to PCa), and might be helpful but not proven in any large study for PCa. They may or not help with BPH.
Ginger
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3426621/
https://onlinelibrary.wiley.com/doi/abs/10.1002/jbt.22611
Neem
Neem components as potential agents for cancer prevention and treatment
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4734358/
Consumption of a bioactive compound from Neem plant could significantly suppress development of prostate cancer
https://www.sciencedaily.com/releases/2016/09/160929082202.htm
Brand examples: PLNT by VitaminShoppe. In general lower cost.
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Crinum Latifolium- Asymptomatic inflammatory Prostatitis , BPH, anti-cancer potential
Crinum Latifolium Leave Extracts Suppress Immune Activation Cascades in Peripheral Blood Mononuclear Cells and Proliferation of Prostate Tumor Cells:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3134856/
Overview:
https://herbalteashinesun.blogspot.com/2016/09/medicinal-uses-bulbs-and-leaves-of.html?m=1
Crinum Latifolium: Traditional Vietnamese Herb Shows Great Promise for Prostate & Ovarian Health
http://imagesandprostate.blogspot.com/2008/08/crinum-hope-prostate-and-ovarian.html
3 Brand examples: Florida Herbal Pharmacy, Get Well Natural, Crila. All very expensive.
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Lycopene
The Potential Role of Lycopene for the Prevention and Therapy of Prostate Cancer: From Molecular Mechanisms to Clinical Evidence
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3742263/
Lycopene effects contributing to prostate health
https://pubmed.ncbi.nlm.nih.gov/20155615/
Is there a benefit from lycopene supplementation in men with prostate cancer? A systematic review
https://www.nature.com/articles/pcan200938
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Oregano Oil / Carvacrol
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5075627/
Carvacrol, is a component of oregano.
https://www.bensnaturalhealth.com/blog/oregano-benefits/
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Graviola/Soursop (fruit or leaf tea)
https://www.webmd.com/cancer/graviola-cancer-overview
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Iodine (more advanced should use, not for everyone)
The Link Between Prostate Cancer and Iodine
https://www.biowarriornutrition.com/blogs/blog-page/the-link-between-prostate-cancer-and-iodine
A prospective study of iodine status, thyroid function, and prostate cancer risk: follow-up of the First National Health and Nutrition Examination Survey
https://pubmed.ncbi.nlm.nih.gov/17571964/
Iodine Uptake and Prostate Cancer in the TRAMP Mouse Model
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3883964/
Use with physicians help only. Just be aware the taking of iodine and not having good or adequate selenium levels is a known trigger to cause Hashimoto's disease. So that means if you choose to take iodine, have your primary care run a selenium lab first because if it is deficient that can cause a bad outcome.