Obesity is an emerging health problem. Its a estimate that 7 % of world population is suffering from obesity. The rate of growing of obesity is alarming . Even some nations face this problem at national level. In USA obesity is prevailing disease among the adults and children. There is lot of money being spent to control and prevent it.

Definition

Obesity is a condition which is easy to spot but it is quiet difficult and tricky to define. Even the medical science finds difficult to give exact definition of the term due to its vast case variety. In fact obesity is excess of body fat, accumulated in the body. By far the most reputed definition is the BMI (Body Mass Index ) of a person. On the basis of BMI obesity is divided into following three grades or degrees by WHO.

A cosmopolitan problem

Obesity is becoming a major health related issue globally. It is estimated that about 7% of the current world population is obese speaking in terms of number it becomes about 250million. This figure indicates the gravity of situation. In USA alone the 100million adults fall in the range of being obese.

Approximately 20 -25% of children are overweight or obese. In Europe 15% men and 22% women are obese. Same is the situation in the other parts of the world. Asia and Africa are also not far behind in this race. Only in Middle East 40% of the population is suffering from the same problem. How to Stop Obesity Ruining Your Child's Life?

Causes

It is considered a multi factorial problem. There are different factors which are involved in emergence of this disorder. The major contributors are listed below.

• Eating habits
• No physical activity
• Genetic make up
• Behaviour
• Economic status
• Environmental factors
• Smoking cessation

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Role of Leptin

Leptin is hormone which is associated with the fat accumulation in animals. Research is being conducted to find if it may be a cause of similar problem in the human beings, but up till now no such evidence has been found. The deficiency of leptin causes accumulation of fats but in all the human cases under investigation there was no such evidence. Leptin has a little role to play in the humans.

Body fat distribution

Fat distribution in human body has different varieties in the major cause. Normally in women the buttock is more preferable area but in men belly and chest are mostly involved in the excessive fat distribution.