The functions and traits of Arimidex although powerful are extremely simple. As an AI Arimidex functions by blocking the aromatase enzyme, which is in turn responsible for the production of estrogen. By inhibiting the aromatase process, Arimidex will lower the body’s serum estrogen levels; in fact, a total suppression of estrogen by 80% has been well noted with this AI. This will prove very beneficial to numerous breast cancer patients and extremely valuable to many anabolic steroid users. Product Arimidex also has the ability to stimulate the release of Luteinizing Hormone (LH) and Follicle Stimulating Hormone (FSH), two hormones essential to natural testosterone production. This has led some physicians to use the AI in low testosterone treatment plans in place of testosterone, but it’s generally not the best choice. Arimidex in a low testosterone plan is generally better served in conjunction with testosterone therapy.