The Dunedin Multidisciplinary Health and Development Study (Dunedin Study) has followed a cohort of 1037 individuals since their birth in Dunedin in 1972/73. The study is remarkable for the range and depth of information that has been collected on the first 32 years of the participants' lives and for the minimal loss to follow-up (4%) up to this point (2004/05). The projects in years 1 to 3 of the current programme grant sought funding for a re-assessment of the cohort at age 38 years. This has been a success. Years 4-6 of the Programme will be dedicated to writing up Phase 38 data. The data we have gathered will provide important new information across many domains of health and well-being from a life-course, multidisciplinary, and intergenerational perspective.