You’re not alone. I’ve been gathering evidence about potential PFS link to gut inflammation. I don’t subscribe to the old school of thought, which posits that some foods are blocking 5AR/anti androgenic and cause issues. My hypothesis is that finesteride has somehow caused microbiome dysbiosis via altering hormones.
The result can include symptoms like brainfog, excess inflammation, muscle aches, food sensitivities, fatigue, sleep disturbances, bloating, constipation/diarrhea, weight loss or gain, autoimmune disorders, post exercise malaise, low libido, anhedonia, depression, anxiety, etc.
Re-balancing the gut is a challenging task but it’s possible. Microbiome analysis is usually the first step.