42yo male, blood test ->higher than normal estradiol levels & GI stool test ->high beta-glucaronidase - what's this mean? Take calcium D glucarate?

Get a consult. Most of this stuff about beta-glucuronidase in the stool comes from "independent medical thinkers" focused on gut flora and isn't mainstream. The scientific papers I've seen come from obscure institutions. And why are you having your estradiol checked? Reference ranges on labs are set so that a few percent of healthies fall outside on either end. I'd get a second, mainstream opinion.