"Longitudinal studies support the proposition that the extent and severity of chronic conditions in middle and late ages are to a large extent the outcome of environmental insults at early ages, including in utero. Data from the Early Indicators program project undertaken at the Center for...

This paper is an extensive revision and expansion of Working Paper No.1402. It centers on a new time series of life expectations in the U.S. since 1720, which has been constructed from the NBER/CPE pilot sample of genealogies. Native-born Americans achieved remarkably long life expectations...