Venous Thrombosis in Women: Pregnancy, the Contraceptive Pill and Hormone Replacement Therapy

The impact of hormones on deep venous thrombosis is one of the most charged and debated subjects in contraceptive medicine. Female hormonal balance is primarily affected by the use of either oral contraceptives or HRT. For a long time it has been recognized that oral contraceptives can raise the incidence of DVT; however, there has been an enormous controversy as to whether all progestins do this equally or whether some have a greater impact than others where oral contraception is concerned...