The Global Burden of Diseases, Injuries, and Risk Factors 2013 Study (GBD 2013) is an updated analysis of disease and injury prevalence, incidence, and years lived with disability (YLDs) for 188 countries from 1990 to 2013. The study aims to provide a comprehensive and systematic update on the global burden of diseases, injuries, and risk factors, incorporating new data and methodological advancements. Key changes from GBD 2010 include expanded cause and sequelae lists, improved data sources, and enhanced modeling techniques. The study reports incidence for acute sequelae and prevalence for chronic sequelae, along with YLDs for all causes. The analysis highlights the increasing volume of YLDs due to population growth and aging, with limited progress in reducing age-specific YLD rates. The study also addresses critiques of previous estimates, such as the validity of disability weights and the need for higher-quality data. The results are presented in population pyramids, global incidence of acute conditions, prevalence of chronic diseases, and impairment prevalence, showing trends and changes over time.The Global Burden of Diseases, Injuries, and Risk Factors 2013 Study (GBD 2013) is an updated analysis of disease and injury prevalence, incidence, and years lived with disability (YLDs) for 188 countries from 1990 to 2013. The study aims to provide a comprehensive and systematic update on the global burden of diseases, injuries, and risk factors, incorporating new data and methodological advancements. Key changes from GBD 2010 include expanded cause and sequelae lists, improved data sources, and enhanced modeling techniques. The study reports incidence for acute sequelae and prevalence for chronic sequelae, along with YLDs for all causes. The analysis highlights the increasing volume of YLDs due to population growth and aging, with limited progress in reducing age-specific YLD rates. The study also addresses critiques of previous estimates, such as the validity of disability weights and the need for higher-quality data. The results are presented in population pyramids, global incidence of acute conditions, prevalence of chronic diseases, and impairment prevalence, showing trends and changes over time.