
Increase in Obesity
Weight Loss & Diet Details
While often might seem obvious why a certain individual weight, is more difficult to understand why the average weight of a certain society has recently been increasing. While the genetic causes are central to understanding obesity, they can not fully explain why a culture other than fat.

Loss of activity: obese people are less active in general that people thin and not by their obesity. A controlled increase in calorie consumption of the thin people do not make them less active, correspondingly when obese people lose weight do not start to be more active. The weight change did not affect activity levels.
Relative cost of lower food: massive changes in agricultural policies in the
Marketing plus: this
also played a role. At the beginning of 1980 the Reagan administration in the
The change in the labor force each year a greater percentage of the population spends his day working behind a desk or a computer, without doing virtually no exercise. Has increased the consumption of frozen foods dense in calories that are cooked in the microwave (very comfortable) and has encouraged the production of snacks increasingly developed.

A social cause that many believe played a
role is the increase in families with two incomes, in which neither parent
stays at home to look after the house. This increases the number of restaurants
and take-out.
The uncontrolled expansion of cities may be
a factor: the rate of obesity increases as the expansion of cities is
increasing, possibly because there is less time walking and cooking.
Since 1980 the fast food restaurants have seen a dramatic growth in terms of
sales and number of consumers served. Meals at low cost and intense competition
for market share, has led to increased portion sizes, such as portions of
french fries from McDonald's, rose from 200 calories in 1960 to over 600
calories today.