OBESITY & COMMERCIAL AIRCREW 1. Obesity is defined as an excess concentration of body fat or adipose tissue. Obesity and overweight are terms often used interchangeably, but they do not necessarily represent the same situation. Some individuals may be overweight but not obese, while obese individuals are overweight to a certain defined degree. The medical implications of obesity are more of a cause for concern for the employer than the regulatory body, in view of the nature of the disability & its ability to cause acute incapacitation.Overweight and obese individuals are at increased risk for many diseases and health conditions, including hypertension, dyslipidemia,Type 2 diabetes mellitus, coronary heart disease, stroke, gallbladder disease, osteoarthritis, sleep apnea etc. 2. Methods to measure body fat include BMI, Hip Waist Ratio, skinfold thickness, underwater weighing, bioelectrical impedance, dual-energy x-ray absorptiometry (DXA), and computerized tomography. Body M