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Obesity

                Obesity is global problem, In India its reached epidemic proportions affecting 5% Indian population in a country which is commonly known for its malnourished. Every third patient in India and two in three in America are obese. Even in children obesity is on the rise. Contrary to the belief 50-70% of obese children remain so in their adulthood. There is a increase in diabetes, hypertension, heart attacks, cancers, polycystic ovary disease and infertility seen higher in young.

                Obesity can be calculated with weight, waist circumference, waist to hip ratio but generally BMI (body mass index) is the most accurate and widely used parameter for obesity. BMI is calculated as the weight divided by the square of height in meters

BMI

Status

18.5 – 24.9

Healthy

25-29.9

Overweight

>30

Obese

>40 (37.5 in Indians)

Class 3 Obesity, Severe obesity (also called Morbid Obese)

>50

Super Obese, Class 4 obesity

>60

Super Superobese, Class 5 obesity

                Different countries use this parameter based on the weight pattern of their country like severe obesity in Indians is taken at a BMI of 37.5. In Japan a BMI >25 are considered as obese. It’s used differently in children.

                A BMI ≥45 kg/m2 is associated with a decrease of 13 and 8 years of life expectancy for white male and female subjects, respectively, and a decrease of 20 years for the younger black male population.