According to Wikipedia obesity described where the body has excess body fat has accumulated to such an extent that health may be negatively affected It is commonly defined as a body mass index (BMI = weight divided by height squared) of 30 kg/m2 or higher. This distinguishes it from being overweight as defined by a BMI of between 25–29.9 kg/m2.

The research shown that the major cause of obesity are combination of excessive calorie consumption and sedentary lifestyle. There is little evidence to support the commonly expressed view that some obese people eat little yet gain weight due to a slow metabolism. What has been found, however, is that some obese people underreport how much food they consume compared to those of normal weight.

Historically, overweight or obese is a sign of wealth and only rich people who is suffering with obese. Now, even the poor people can be obese or overweight. The reason is because they are malnourished. The food they eat are often cheap, industrialized, mass produced. These kinds of food usually contain high carbohydrates, high sodium, high sugar and high preservatives.

The health impact by being overweight or obese are lead you to develop heart disease, type 2 diabetes, and astheorithritis ( I hope I get this right ). So how to fight the obesity? Again changing your diet by cutting down carb, sugar, bad fat, sodium and exercise. How about for the poor people? They may want to start exercise by walking which is no cost and easily done. For the food? Please avoid mass produced food and simply prepare your own meal.

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