Well there isn't probably one cause of BPH.

I will say 5-alpha reductase inhibitors prescriptions (dutasteride and finasteride) and OTC supplements that have essentially low dose 5-alpha reductase inhibitors will work plus lower PSA, but it covers up the issue so that doesn't solve things BPH wise.

Several proposed things that cause BPH are for one a testosterone to estrogen ratio below 10 which would be a direct cause. I have posted what can be done prior if you have those tested and it isn't ten or higher. I will post it below.

Another cause of BPH is inflammatory foods or ones that are prostate inflammatory, and that is complex to tackle as it may differ by person, and some very different opinions on foods of course. But the general things are basic to more complex, the basic being avoid sugar and all fairly refined carbs (things like Ezekiel bread are believed ok), avoid all oils but Olive and some are ok with coconut others not - but unfortunately most prepared foods have all the cheap oils, avoid all dairy and milk. Then the complex and differing opinion ones are to avoid meat totally as it has these in it:
Heterocyclic amines
TMAO (Trimethylamine N-Oxide)
Heme iron
Neu5gc (N-Glycolylneuraminic acid )
AGEs (Advanced glycation end products )
See GameChangersMovie.com on that
So that means use soy instead of meat. Other websites avoid soy and go for meat/keto. I did meat and keto for years and still had BPH so I am now avoiding meat. Up to you what you try.

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Testosterone / estrogen ratios improvement protocol v004

Have a holistic doctor, naturopath, primary care, or other doctor order labs for you (testosterone, estrogen and progesterone) and hopefully have useful suggestions. A good testosterone to estrogen ratio for a male that is 40 or older should be around 10 and up, though it is much higher in younger men. That is 10 times more testosterone than estrogen or 10:1. If it is quite a bit lower there are some things you can do.

Symptoms of poor Testosterone / estrogen ratio in men include:

• BPH and sometimes prostate cancer follows
• Low libido
• Hair loss
• Weight gain & body fat
• Gynecomastia (“man-boobs”)
• Erectile dysfunction
• Muscle loss
• Fatigue

Things to do - knowing we are people with prostate problems including PCa.

• If PCa and BPH, don’t take exogenous testosterone (like injections) unless approved by physicians, so only work on natural was to raise the Testosterone portion of the ratio. That would mean exercise, controlling blood sugar, etc.
• Try things to lower estrogen. Some natural ways are cruciferous vegetables. Supplements include Sulforaphane glucosinolate (SGS) and DIM as these derive from cruciferous vegetables. Be sure the DIM and SGS work right for you, as they may not always do the job or an inadequate one. My experience is these don’t work that well.
• Avoid plastic touching food especially hot food, as it has “xenoestrogens” which to the body are just like estrogen. That means dump all plastic storage containers, especially older ones. Some filter all drinking water to get plastics out.
• Talk to your doctor about progesterone as it is a truly natural anti-estrogen but only if ratios are really bad. It is available OTC as well (Amazon search: progesterone USP micronized powder), but you need a very small amount daily with breaks from time to time (over a week breaks). Use a low dose suitable for men and doctors ordering labs to help (estrogen and testosterone), so it does require a doctors help for that. Trans-mucosal progesterone may produce best results. Progesterone Powder USP, Bioidentical Micronized Powder can be dissolved into tiny amounts with a measuring spoon. For men 1/64 tsp (need a tiny measuring spoon), dissolve in drops of Olive oil on a spoon, mix around with finger. Apply transmucosal or on gum area of mouth 30 minutes before bed. It will make you sleepy, just be aware of that.