The Obesity Means Excess Body Fat Essay

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Obesity means excess body fat, BMI is reasonably accurate method for predicting adiposity and can be easily used as screening tool (Rome, 2011). The definition of pediatric obesity is not usually easy. Because directly measuring body fat is difficult and time consuming, the measurement of BMI is most commonly used. However, BMI does not always accurately reflect body composition. For example, athletes with high muscle mass and an extremely low body fat may have obese BMIs. The use of BMI as a predictor of body fat mass in pediatrics has been found to be variably accurate, with correlation ranging between 0.5 and 0.94, depending on sex and age. Despite these limitations, BMI has been shown to be predictive of the presence of cardiovascular risk factors in pediatric patients and is considered the most relevant clinical parameter of childhood obesity (Hsia et al., 2012). The continuing changes in body weight and build throughout childhood mean that overweight and obesity cannot be defined by the static BMI thresholds that are used by adults aged 18 years or older (overweight = BMI 25–29.9 kg/m2; obese = BMI ≥30 kg/m2). Instead, the child’s BMI is compared with the distribution of BMI in a reference population of the same age and sex. Conventionally, the reference data are expressed as percentiles: the 50th percentile represents the mean value for that age and sex, while the 85th and 95th percentiles respectively contain the highest 15% and 5% of values

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