More than 18,000 study members have taken part in NCDS since it started.
As you were growing up, your parents or guardians will also have taken part in the study. During your time at school information was also collected from your teachers. For 1 in 3 of you, if you had a husband, wife or partner in 1991, when you were 33, we asked them to complete a questionnaire. If you were in this group and had any children at this time they were asked to complete a series of assessments.
In 2008, when you were 50, we asked your partners (and you) to give us permission to add information from health records held by the NHS and economic records held by the Department of Work and Pensions (DWP) and Her Majesty’s Revenue and Customs (HMRC) to the information you have given us in our surveys over the years.