@anon10035199’s response is spot on … “everything” can increase SHBG and no one understands what to do about it!
My thread on the subject of my insanely high SHBG.
The most common answer for high SHBG is “inflammation” … what the hell does that mean … “inflammation of what?”.
But @valexi7, you need labwork to be sure of where you are having issues.