Like many men over 40, I have high estradiol levels (Estrogen E2),
which interferes with my body's ability to make use of my available
testosterone.  This condition results in symptoms such as low libido
and erectile dysfunction, as well as other symptoms such as fatigue
and mood changes. I have read with great interest an article on the
Life Extension Foundation web site titled "Male Hormone Modulation
Therapy".  I followed the article's advice and put myself on a 7 week
trial to reduce my estrogen naturally using Chrysin and DIM, which I
took with absorption enhancers such as Zinc, Vitamin E, and peperine. 
Unfortunately my estradiol is still high.  The article states that in
cases where natural therapies fail, the only alternative is to receive
a treatment of Arimidex (Anastrazole) in a very small dose (0.5 mg a
few times a week).  I recently went to an endocrinologist seeking this
therapy.  She stated that Arimidex is not a recommended therapy for
males with high estrogen because it is not a long-term solution -- she
says that Arimidex loses its efficacy after only a very short period
of time, abnd she had no ready answer for how to control my estradiol
level.  After receiving this opinion,, which struck me as inaccurate,
I read Arimidex's web site, which seems to indicate that patients
routinely take Arimidex for many years, so I question the
endocrinologist's statement.  Can you comment on the long-term
efficacy of Arimidex as an estrogen reducer in males?  Thank you.