Short answers, pulled from the story.
The World Health Organization formally recognized obesity as a global epidemic in 1997. This declaration followed decades of data showing that body mass index values above 30 kg/m2 correlated with severe health risks.
Japan defines obesity as any BMI greater than 25 kg/m2 while China uses a cutoff of 28 kg/m2. These lower thresholds reflect biological differences where Asian populations face increased risk between 22 and 25 kg/m2 compared to Caucasians who typically see risks rise later.
In 2021, the World Health Organization estimated that obesity caused at least 2.8 million deaths annually worldwide. These fatalities stem from cardiovascular diseases including coronary heart disease and congestive heart failure alongside type 2 diabetes which accounts for 64% of cases in men and 77% in women due to excess body fat.
Genetic factors contribute significantly to individual susceptibility with over 41 sites on the human genome linked to obesity development when favorable environments exist. People carrying two copies of the FTO gene weigh approximately three to four kilograms more on average while facing 1.67 times higher obesity risk compared to those without this allele.
The United States recorded forty-one point nine percent adult obesity prevalence between 2017 and March 2020 with severe obesity affecting nine point two percent of adults. Non-Hispanic Asian adults showed lowest rates at seventeen point four percent compared to non-Hispanic black individuals reaching forty-nine point six percent.