_______________________ September 7, 2020 How the unsolved problem of finding the Healthy Life Expectancy (HLE) in the far past was resolved: The case of Sweden (1751-2016) with forecasts to 2060 and comparisons with HALE Christos H Skiadas 1 and Charilaos Skiadas 2 1 ManLab, Technical University of Crete, Chania, Greece (E-mail: skiadas@cmsim.net ) 2 Department of Mathematics and Computer Science, Hanover College, Indiana, USA (E-mail: skiadas@hanover.edu ) Abstract Healthy Life Expectancy (HLE) estimates are achieved after systematic work of a large group of researchers all over the world during last decades. The most successful estimate was termed as HALE and is provided by the World Health Organization (WHO) in the related website. Having established a methodology of data collection and handling the HLE can be estimated and provided to researchers and policy makers. However, it remains an unexplored period of the last few centuries where, LE data exists along with the appropriate life tables, but not enough information for HLE estimates is collected and stored. The problem is now solved following a methodology of estimating the HLE from the life tables after the Healthy Life Years Lost (HLYL) estimation. Our methodology on a Direct HLYL estimation from Life Tables, is tested and verified via a series of additional methods including a Weibull parameter test, a Gompertz parameter alternative and of course a comparison with HALE estimates from WHO. The complete