There have been an overwhelming number of posts lately from members who seem to be under the impression that aromatase inhibitors (AIs) are to be used 'in case a lump forms' or 'if I notice any puffiness'.
There are many dangers of having elevated E2 levels, and when using aas, a good AI regimine is important to help ensure you minimize the potential for health risks associated with increased E2.
High estrogen can be a major contributing factor to dangerous issues such as heat disease, stroke, prostate enlargement, prostate cancer and more.
Please read the following link, which sheds some good light on why E2 levels should be controlled at all times, and not only if you notice gyno symptoms occuring.
Dangers of Excess Estrogen in the Aging Male - Life Extension