SWAN is a multi-site longitudinal study of mid-life aging in women of diverse ethnic and racial groups. Over 3000 women were initially enrolled in 1996 and have been followed approximately annually through 2016.


  • About SWAN ›
    The Study of Women’s Health Across the Nation (SWAN) is a multi-site longitudinal, epidemiologic study designed to examine the health of women during their middle years. The study examines the physical, biological, psychological and social changes during this transitional period.
  • SWAN History ›
    In 1994, SWAN was designed as a multi-site, observational study to be conducted in three phases. The initial phase consisted of focus groups of women with characteristics similar to those subsequently enrolled in SWAN.