Our theme for march is OBESITY.
In my first blog of this month I am going to present on the history & introduction of Obesity. In my blog I am emphasizing on the
Factors responsible for causing obesity &
OBESITY - Obesity can be defined as a medical condition in which excessive fat is accumulated in the body to a greater extent that may cause damage to the health & may even reduce the life span.
According to NIH(National Institutes of Health) report,Obesity is defined as 'the condition of having an abnormally high proportion of fat... a complex multifactorial chronic didease that develops from an interaction of genotype and the environment'
BMI(BODY MASS INDEX) - It is an index to define overweight.
The ranges of BMI are as follows:
CAUSES FOR OBESITY/ FACTORS CONTRIBUTING TO OBESITY -
Excessive intake of food - When extra energy is consumed it will be stored in the form of body fat. Theoretically, reducing the calorie intake by 500Kcal/day may result in a weight loss of 1 pound/week.
Lack of Physical Activity/Sedentary life style - There is a risk of gaining 5Kg or more weight in people with less physical activiy.
Genetic Susceptability  - A study showed that, infants born to obese mothers were less active & gained more weight within the age of 3 months when compared to infants of normal weight mothers.
Alcohol Consumption - Alcohol is very rich in calories & it can also show its affect on the bosy metabolism. Frequent light/moderate drinkers may not cause obesity but infrequent heavy drinkers may lead to overweight.
EPIDEMOLOGY - As per 2005, the estimation of WHO says that 400 million adults are obese & the prevalence is more in women comparitively. Severe obesity is seen in U.S.,Australia and canada.obesity is common in all countries except in sub-saharan region.
- Obesity, Barry Gumbiner, Page.no. xii
- Rod K. Dishman et al,Physical activity epidemiology,page 178.
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