Discussion: I am a 60-year-old prostate cancer patient. Have I seen a clinic in Europe that offers treatment using baking soda infusions?

I can not refer to the clinic itself. You should check verified patients' opinions if you want treatment at this clinic. The idea is (I guess) to neutralize the acidity of the digestive system that contributes to the proliferation of pathogens (who thrive in an acidic environment) and thus reduce the burden on the immune system. It is possible to achieve a similar result (in my eyes, even better) using baking soda enemas. The blood maintains a constant pH in a slightly alkaline environment, with only minor deviations. Although prostate cancer differs from chronic prostate inflammation, I recommend you read the article in the attached links.

Links:
Chronic Prostatitis, Epididymitis, and BPH.
https://www.sf-healing.com/page/123 (Copy & Paste)

The holistic principle and balancing gut flora are essential.
https://www.sf-healing.com/page/110 (Copy & Paste)