Linked from
The 9 pages that link to Aromatase, each with the reason it gives.
EstrogenRelated: It performs the final step in estrogen synthesis in many tissues.
EstradiolRelated: It makes estradiol from testosterone in ovarian and other tissues.
EstroneRelated: It produces estrone by converting androstenedione in peripheral tissues.
NandroloneRelated: Nandrolone can be aromatized, linking its use to estrogen-related effects.