I have a suspicion on something about blood testing... I would think that if you want an accurate level of what is in your body, not just in the blood stream, you would probably need to get biopsies in various places where the estradiol levels are known to exist. I come at this because of experience with vitamin B-12 (I am vegan, long-term). I have to wonder how accurate a blood test is as a reflection in the blood stream of the actual levels inside the body tissues away from the bloodstream - are the tissues absorbing and utilizing the nutrients correctly, or is there a problem with the transmission of nutrients across the cell walls into the cells themselves? What if, for instance, a high calcium count doesn't necessarily mean that you are getting enough calcium, but that half the calcium in the bloodstream might be coming from your food, and the other half from your own bones? Of the calcium from your bones, is there any detection that it has been bound to acids to neutralize then for safe elimination from your body? Then that calcium already used for buffering is no longer usable to the body and excreted.