Definitions of overweight and obesityThe usual definition of overfatness or overweight is up to 20 per cent over a recognised ideal body weight, or a body mass index (BMI) (or height-weight measure) of 25-29.9- BMI is a measure using weight divided by height squared (kg/m2); the normally recognised 'ideal' is a BMI of 20-25. Obesity is regarded here as a BMI of 30-39.9; and morbid obesity as BMI over 40. Summary of main points. • Almost 1 in 2 people in western countries are now defined as overweight or obese. • People in some Western countries have been increasing body weight at the average rate of 1g/day over the last decade. • 'Overfatness' is a more appropriate term than 'overweight'. • The fitness and nutrition booms have had little impact on levels of fatness throughout the world. • The environment determines prevalence, and genes determine the presence of obesity. • The traditional paradigm of ‘weight=energy in (food)— energy out (exercise) is no longer adequate for understanding obesity. *4\186\4* «Cheap Tramadol Without Prescription» |