The University of Michigan Health and Retirement Study (HRS) is sponsored by the National Institute on Aging and the Social Security Administration. It is a longitudinal study that surveys thousands of Americans over the age of 50 every two years. It began in 1992. It looks in-depth at health, health insurance, work, retirement, income, wealth, family charateristics, and intergenerational transfers through extensive interviews with survey participants. Data products are freely available online to registered users.