[imbackagain]

I am on a BO program and was looking into adding other glandular like pituitary and mammary. I saw a handful of reviews for these of people using BO alongside other phytoestrogenic herbs with results. It’s often said on threads here that we should NOT combine other estrogens with the BO or PM because of their strength. But is there any real literature to support that? Or is it just cautiousness. Thanks in advance!