Wednesday, January 16, 2019

OBESITY AND ITS TREATMENT (MOST COMMON DIESES)

Definition of obesity



Obesity has traditionally been defined as an excess accumulation of body energy, in the form of fat or adipose tissue. Thus, obesity is a disease of positive energy balance, which arises as a result of dysregulation in the energy balance system – a failure of the regulatory systems to make appropriate adjustments between intake and expenditure. It is now becoming clear that the increased health risks of obesity may be conferred by the distribution of body fat.



The body mass index (BMI) is now the most accepted and most widely used crude index of obesity. This index classifies weight relative to height squared.

The BMI is therefore calculated as weight in kilo-grams divided by height squared in meters, and expressed in the units of kg/m2. Obesity in adults is defined as a BMI above 30.0 kg/m2, while the normal range for BMI in adults is 18.5–24.9 kg/m2. A BMI in the range of 25–30 kg/m2 is considered overweight. In children, it is more difficult to classify obesity by BMI because height varies with age during growth; thus, age-adjusted BMI percentiles must be used.
The more sedentary lifestyle is due to an increased reliance on technology and labor-saving devices, which has reduced the need for physical activ-ity for everyday activities. Examples of energy-saving devices are:



●      increased use of automated transport rather than walking or cycling



●      central heating and the use of automated equipment in the household, e.g., washing machines



●      reduction in physical activity in the workplace due to computers, automated equipment, and elec-tronic mail, which all reduce the requirement for physical activity at work

●increased use of television and computers for entertainment and leisure activities


●use of elevators and escalators rather than using stairs


●increased fear of crime, which has reduced the likelihood of playing outdoors


●poor urban planning, which does not provide adequate cycle lanes or even pavements in some communities.

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