What is obesity?

Obesity is one of the major problems in the industrialized world. It is affecting all age groups and is responsible for many diseases and disorders like high blood pressure, diabetes, heart disease, arthritis etc. Obesity is characterized by excess weight (fat) accumulated in one’s body.

 

How much is judged as excess weight?

A person whose body mass index (BMI) is more than 30 is considered obese. Body mass index is defined as the person’s body weight divided by the square of his or her height.

 

What causes obesity?

A person’s weight is determined by the balance between calorie intake and calorie expenditure . People gain weight if they consume more calories than they burn, the excess calories are stored by the body as fat. A person can lose weight if he (or she) consumes less calories than he burns, Therefore the most common causes of obesity are overeating and physical inactivity.

 

It looks as simple as that! Doesn’t it?

Nope! Weight gain or loss is not that simple! As we try to study why we become obese, the matter tends to become more and more complex. If it were that simple, we would not have spent billions of dollars on research for understanding and controlling obesity! There are many factors that contribute to a person’s weight gain (or loss). Genetics or heredity plays a very important role.

 

Overeating is one of the major causes of weight gain. If the diet is high in fat or simple sugars, the effect of weight gain is multiplied.

 

The reason for this is simply the high energy density (more calories packed in a small volume of a serving) of the high fat high sugar diet. Weight gain due to consumption of high fat high sugar diet has been validated by several epidemiological studies

 

Lifestyle

Overeating is one of the major causes of weight gain. If the diet is high in fat or simple sugars, the effect of weight gain is multiplied.
The reason for this is simply the high energy density (more calories packed in a small volume of a serving) of the high fat high sugar diet. Weight gain due to consumption of high fat high sugar diet has been validated by several epidemiological studies

 

Health Impact of Obesity: Associated with an increased risk of:

Obesity and its harm

WHO facts on obesity

  • Worldwide obesity has more than doubled since 1980.
  • In 2014, more than 1.9 billion adults, 18 years and older, were overweight. Of these over 600 million were obese.
  •  39% of adults aged 18 years and over were overweight in 2014, and 13% were obese.
  •  Most of the world’s population live in countries where overweight and obesity kills more people than underweight.
  •  42 million children under the age of 5 were overweight or obese in 2013.
  •  Obesity is preventable.
BMI table

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