Other than acne and accelerated hair loss , the two most common problems of AAS use are gynecomastia and difficulty in recovering natural testosterone production. Antiestrogenic drugs can effectively address both problems and are safe for most individuals. Ideally, if aromatizable drugs are used, the problem is corrected at the source by limiting production of estrogen by using an aromatase inhibitor. However, it is also effective to use a selective estrogen receptor modulator such as Clomid. The latter drug is also of particular use in helping to restore natural testosterone production after a cycle.
In normal tissue, DIM (300nM) can activate the ATM genetic repair pathway in response to irradiation damage in a manner dependent on BRCA1 (one of its targets  ) without increasing survival of breast cancer cells (MDA-MB-231  ); there are known alterations in this pathway in some breast cancers where BRCA1 is reduced while ATM itself seems to be hyperactive, and oral supplementation of 300mg DIM has been noted to increase BRCA1 mRNA levels after 4-6 weeks supplementation (measured in white blood cells) in women who had a low activity mutation. 
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