The way supplement companies word things in advertising is often dramatic and that phrase i agree can set alarm bells ringing. I agree its not healthy to have no estrogen or even a very small amount of estrogen permanently or for a very long time ,There will be obvious signs as a result of this such as joint pain and loss of libido.
As far as i understand it , i may get corrected on this, is that you can only fool the body for so long after which it will produce a further enzyme to help with the correction of too low estrogen .
I personally have used 6 bromo (hyperdrol) but not at the suggested dosage , but at 50 mg ed and on occasion eod.
There are more natural ways of removing estrogen which are documented in the book " the testosterone syndrome" by Dr Shippen.In it he recommends the use of grapeseed extract , reservatrol, and at leat 50 mg of zinc per day.Its important to ensure that the liver is flushing estrogen out of the body and certain foods/supplements will ensure it does just that.On the other hand certain foods slow the process down in the liver of which grapefruit is one and is seen in supplements as naringin and can interfere with the absorbtion of drugs.
If you feel uneasy about taking something like ATD , 6 BROMO, , then i suggest the more natural route for you .With the 3 listed above you are only able to take for certain periods of time.The use of more natural supplements can be used continually.
Also estrogen should be measured through a blood test to see if it falls within the prameters set by the hospital laboratory before supplementing with a drug .
Anything else is guess work.If youve no reason to introduce an estrogen blocker into your supplement programme why do it?
There is an interesting section in the book William LLewellyns "anabolics 2010" on estrogen aromatization.In it he says that it is an desirable hormone and estrogenic steroids are the best mass builders.It is thought to promote an anabolic state by affecting glucose utilization in muscle;has a role to play in production of gh /igf1 and has other functions.
He finally says that AIs should only be used if there is a clear need for them, so if you are not prone to estrogenic side effects, find something that does aromatise . and the estrogen will help you add mass and provide energy.
Thats my take on it with the help of ANABOLICS 9TH ED 2010.