Every Level of Obesity in 13 Minutes

Global obesity rates have been rising since 1990, with no country successfully reducing its obesity rate; the primary drivers include the 'nutrition transition' (increased consumption of ultra-processed foods), sedentary lifestyles from economic development, and an 'obesogenic environment' that promotes weight gain, while genetics account for approximately 50% of obesity risk, making it a complex issue involving both individual biology and systemic environmental factors.