The study, conducted by the GBD 2015 Obesity Collaborators, analyzed data from 68.5 million individuals to assess trends in the prevalence of overweight and obesity among children and adults between 1980 and 2015. Using the Global Burden of Disease study methods, the researchers quantified the disease burden related to high body-mass index (BMI) in 195 countries from 1990 to 2015. Key findings include: - In 2015, 107.7 million children and 603.7 million adults were obese. - The prevalence of obesity doubled in over 70 countries and continued to increase in most others. - Childhood obesity rates increased more rapidly in many countries than adult obesity rates. - High BMI contributed to 4.0 million deaths and 120 million disability-adjusted life-years (DALYs) globally in 2015. - Cardiovascular disease was the leading cause of death and DALYs related to high BMI. - The disease burden related to high BMI increased from 1990 to 2015, but the rate of increase slowed due to improvements in cardiovascular disease mortality rates. The study highlights the need for continued surveillance and evidence-based interventions to address the rising prevalence and disease burden of high BMI.The study, conducted by the GBD 2015 Obesity Collaborators, analyzed data from 68.5 million individuals to assess trends in the prevalence of overweight and obesity among children and adults between 1980 and 2015. Using the Global Burden of Disease study methods, the researchers quantified the disease burden related to high body-mass index (BMI) in 195 countries from 1990 to 2015. Key findings include: - In 2015, 107.7 million children and 603.7 million adults were obese. - The prevalence of obesity doubled in over 70 countries and continued to increase in most others. - Childhood obesity rates increased more rapidly in many countries than adult obesity rates. - High BMI contributed to 4.0 million deaths and 120 million disability-adjusted life-years (DALYs) globally in 2015. - Cardiovascular disease was the leading cause of death and DALYs related to high BMI. - The disease burden related to high BMI increased from 1990 to 2015, but the rate of increase slowed due to improvements in cardiovascular disease mortality rates. The study highlights the need for continued surveillance and evidence-based interventions to address the rising prevalence and disease burden of high BMI.