The mortality rates for the years 1975-1985 for alt causes, cardiovascular disease, coronary heart disease and cerebrovascular diseases obtained from the WHO Data Bank in Geneva were analysed separately for men and women in the age group 30-69 years. Data from 30 industrialised countries were available for the analysis. In most of the countries cardiovascular diseases are still responsible for nearly half the deaths in men. The highest mortality rates, except for coronary heart disease, in the age groups studied are in Eastern Europe. Most countries in this region have also registered an increase in the mortality rates during the last decade. This increase is more pronounced in men than in women. The importance of the WHO MONICA Project (Multinational Monitoring of Cardiovascular Disease and Their Determinants) for interpreting these trends is discussed. Information is provided about another WHO project “The Intensified Programme in Coronary Heart Disease Prevention” in which 27 countries are participating. The aim of this project is to facilitate the national action plans for preventing coronary heart disease and exchanging information on their implementation in different countries.