Never too late for the heart: Lessons for midlife cardiovascular disease prevention

This study examined the impact of 5 common and preventable risk factors, such as high blood pressure, high cholesterol, diabetes, excess weight, and smoking, on long-term health. 1 The research focused on how these factors influence the number of years people live without developing heart disease or facing early death.The study analysed information from more than 2 million adults in 39 countries.It compared the health outcomes of individuals who had these risk factors at age 50 with those who did not, and examined how changes in these factors between the ages of 55 and 60 influenced their future health.The results were notable.Individuals who had none of the risk factors at age 50 lived significantly longer and spent more than 10 extra years free from heart disease compared with those who had all the risk factors.Their overall life expectancy was also higher; women lived roughly 15 years longer, and men about 12 years longer.The study further showed that improving health even in midlife can make a meaningful difference.Reducing blood pressure, quitting smoking, and addressing other risk factors between the ages of 55 and 60 were linked to longer, healthier lives.Controlling high blood pressure added the most years free of heart disease (2.4 years in women and 1.2 years in men), while stopping smoking provided the greatest increase in years free from premature death (1.7 years). COMMENTUsing information from more than 2 million people across 133 cohorts in 39 countries, this pooled analysis provides a detailed understanding of how 5 major risk factors, such as high blood pressure, elevated non-high-density lipoprotein cholesterol, diabetes, unhealthy body weight, and smoking, impact the lifetime risk of cardiovascular disease (CVD) and overall mortality.By applying harmonized individual-level data and sex-specific survival models that accounted for regional mortality patterns, the study estimated both CVD and all-cause mortality up to age 90.It also introduced the concepts of 'disease-free life years' and 'life years gained,' providing clear measures to highlight the advantages of improving these risk factors.By using Weibull survival models that incorporate changes in risk over time and consider other potential causes of death, the analysis provides a more comprehensive view of how cardiovascular risk evolves across the lifespan, surpassing the limitations of standard 10-year risk estimates.It underscores the powerful combined effect of midlife risk factors, making the conclusions particularly valuable for healthcare professionals and policymakers.A major strength of this study is its inclusiveness.Drawing data from 39 countries, including low and middle-income regions, it reflects the global diversity of CVD risk, addressing the western bias of earlier models. 2 The Global Cardiovascular Risk Consortium (GCVRC) standardized definitions and harmonized data across cohorts, improving comparability