Aims

The Million Women Study was set up with the aim of recruiting 1,000,000 women in the UK into a cohort study, to provide answers to the following questions:

• What effects do combined oestrogen and progestagen hormone replacement therapy (HRT) preparations have on breast cancer risk?
• Are breast cancers detected at screening in women who have used HRT or oral contraceptives different in terms of size and invasiveness from the cancers detected in women who have never used these hormones?
• How does HRT use affect the efficacy of breast cancer screening?
• How does HRT use affect mortality from breast cancer and other conditions?

We are following the health experiences of those taking part in the Million Women Study, to examine which factors are important in maintaining good health for women in the long term.

Visit the study progress page if you would like to see some of the findings and publications from the Million Women Study.