What is obesity defined as?

Obesity is defined as an excess level of body fat, which is a critical distinction in understanding the condition's health implications. It is typically measured using the body mass index (BMI), where a person with a BMI of 30 or higher is classified as obese. The excess body fat associated with obesity can lead to various health issues, including cardiovascular disease, diabetes, and certain types of cancer. This definition highlights the importance of body fat composition rather than just weight alone, as two individuals may weigh the same but have significantly different proportions of muscle and fat. Understanding this concept is crucial for effective health assessments and interventions related to weight management.