Final answer:
Obesity is a disease characterized by excess body fat accumulation. Overweight refers to individuals with a BMI between 25 and 29.9, while the term obesity specifically applies to adults with a BMI of 30 or higher. Losing weight can help alleviate obesity-related health problems.
Step-by-step explanation:
Obesity is a disease in which excess body fat has accumulated to the extent that it is likely to have negative effects on health. It is diagnosed in adults when their body mass index (BMI) is greater than 30 kg/m². Overweight refers specifically to adults with a BMI between 25 and 29.9.
The Centers for Disease Control and Prevention (CDC) defines morbid obesity as having a BMI over 40. It is important to note that BMI may not be the most accurate assessment tool for individuals, as it doesn't consider factors like fitness level. However, losing weight can help reduce or reverse the complications associated with obesity-related health problems.