[Dynseli]

So the breakdown will eventually happen from estradiol into estriol. What we want is a healthy breakdown of estriol into the safe metabolite.

So according to your post, is the theory that certain phytohormones increase the good metabolite? The rest of your theory, with what I'll add to it, is that toxic environmental estrogens turn human estriol into more toxic metabolites. On pubmed, there are a lot of examples of synthetic environmental toxic byproducts getting into the body and causing unhealthy/unsafe/tumorous/cancerous/odd growth. I agree that fiber is important to flush the body of toxins. Fiber (that is indigestible by humans and cancer tissue) is also digested by bacteria, that produce anti-carcinogens. Fibers are a source of beneficial phytochemicals (probably due to beneficial bacteria). I theorize that milk thistle is also important here.

I hope you took note how I tried to get around the problem of SHBG tying up estradiol, and theorized if estradiol gets broken down into estriol, by increasing progesterone and prolactin.

Also, phytohormones being broken down isn't much of a problem. A few of their metabolites also produce the same effects as the original phytohormones. Even if it is weaker, it still adds to and has a beneficial effect.