Final answer:
Obesity affects 650 million people globally and is linked to heart disease, diabetes, and certain cancers. It has tripled since 1975 due to changes in lifestyle and diet.
Step-by-step explanation:
The condition that affects 650 million people worldwide is obesity. Globally, the prevalence of obesity has been rising sharply and is now recognized as a major health challenge. Since 1975, worldwide obesity rates have tripled. Numerous health issues, including heart disease, diabetes, and certain types of cancer, have direct links to obesity. In high-income nations, higher rates of noninfectious diseases are also significantly connected to obesity and lifestyle choices, such as reduced physical activity and consumption of fast, unhealthy foods.