Overeight is a condition in which an individual's weight exceeds the population norm or average, which is determined by height and weight tables based on gender, height, and frame size. Although a standard approach, the definition lack the ability to account for significant muscle mass. A better measure might be percentage body fat, but this approach takes additional time and effort and thus has not replaced the simpler method in all situations.
Obesity is a condition in hich there is an excess of body fat, frequently resulting in a significant impairment of health. Obese individuals are at a level of 20 percent or more above ideal body weight. Obesity is generally defined and accepted as above 20 percent body fat for males and above 30 percent body fat for females. There is some variance in obesity thresholds as determined by different organizations or criteria.