" high normal" estro may not be bad.. But going over for long periods of time is not good.. And running a gram or more of test ( as many here do) with no estro protection is asking for issues.. Elevated estro levels are what most physicians see as the primary cause of prostate cancers.. It used to be thought that dht was the culprit but many are leaning to estrogen .. I know when my father got prostate cancer he had very elevated estro..