Overweight is the term used when a person weighs more than the set limits for him or her. Obesity on the other hand is an excess of body fat.
Appropriateness of weight is measured by BMI (body mass index).
The formula for this is:-
Weight in Kilograms ÷ (Height in meters) 2
eg if a person weighs 80 kgs and his height is 1.6 meters than his BMI is
80/ 1.6 X 1.6 =80/2.56 =31.3.
A person with BMI > 25 but < 30 is considered overweight and > 30 obese. If BMI is > 35 a person is considered to have a severe problem.
Causes of overweight in children :
Being overweight or obese is always due to the accumulation of fat as the calories consumed are more than calories burnt by the body.
In children, obesity is often due to over indulgence in sweets, sugar in ice creams and beverages or cold drinks, lack of exercise, more fats in the diet.
Food habits in the family, genetics and overweight family members play a significant role.
Other factors are video games, TV, android phones, excess sleep etc. In some cases hormonal disorders or brain disorders may alter hunger and satiety and thus may cause obesity. These conditions are rare.
Childhood obesity persists into adulthood if the obesity is severe, if parents or other family members are obese and if no action is taken to correct the cause.