On January 31 – February 1, 2017, a final seminar of the project “From disparities in mortality trends to future health challenges (DIMOCHA)” took place at Max Planck Institute for Demographic Research (Rostock, Germany). In 2013-2017, this project brought together the researchers from the leading European demographic centers, who are working in the field of mortality and population health. The main goal of the project was to perform a complex analysis of disparities in mortality and life expectancy across developed countries and to shed light on the mechanisms of its rising and lowering at different points in time during the second half of the 20th - beginning of the 21st century. Special attention was paid to the analysis of detailed cause-specific mortality trends across the countries. One of the major outputs of the project was launching a new online database - The Human Cause-of-Death Database (http://www.causesofdeath.org/) which provides long-term and harmonized series on cause-specific mortality.