I think it is odd that men are taking estradiol when most men with male pattern baldness are NOT suffering from too little estrogen and actually usually have low or low normal total testosterone and high or high normal estrogen.
Consuming more soy (should be organic and preferably non sprouted), green tea, black tea, seaweed and certain fermented foods (a traditional Asian diet) will allow you to get more isoflavones and produce more S Equol. These isoflavones are more beneficial because they:
1) Activate estrogen beta much more strongly which is associated with a lot of health benefits (lower incidences of breast cancer, prostate cancer and inhibits ER-a from inducing catagen)
2) Acts as a competitive agonist if you have too much estrogen.
3) Acts as an agonist if you have too little estrogen (which, like I said, is usually not an issue).