Cardiovascular diseases (CVD) are the leading cause of mortality and morbidity worldwide. Because several CVD have sequelae that significantly impact the life of affected individuals, knowing the importance of those diseases, as well as their associated factors, is essential to develop preventive measures to reduce that impact.^–

The study published in this issue of the Arquivos Brasileiros de Cardiologia conducts an epidemiological assessment of CVD in Portuguese-speaking countries (PSC) from 1996 to 2016, being, in that context, unprecedented and relevant. Despite some limitations, always present in that type of study, the analysis has considerable merit and allows us to draw very important conclusions. That study assesses, from an innovative perspective, CVD in a set of countries scattered around the world, which share a common language and cultural base, but have totally distinct geographic locations. In that type of analysis, the impact of local aspects, such as sanitation structures, health policies, economic and political conditions, on the parameters assessed must be properly considered, and that study does it in a very elegant way. The authors clearly indicate that the relative importance of the burden of CVD differs in the different PSC, and they directly relate those differences to the socioeconomic conditions of the countries. Of the CVD, ischemic heart disease is the major cause of death in all PSC, except for Mozambique and Sao Tome and Principe. In addition, the authors report that the most relevant risk factors for CVD, arterial hypertension and dietary factors, are common in the PSC. Furthermore, they conclude that “Genetic factors, implicit in the cultural identity, the factors inherent in the host, as well as the huge social inequality might have contributed to explain the mortality rates observed.” It is worth noting that the authors report the general reduction in mortality from CVD as a common denominator among all the PSC, although the intensity of that reduction differs in the countries.

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