Poor nutrition of Americans is not the only cause of obesity epidemic in the U.S.. To this conclusion was the study's authors.
After studying hundreds of research works devoted to obesity, an international research group from the U.S., Italy and Canada under the leadership of David Allison has identified a series of factors contributing to obesity, along with poor nutrition and sedentary lifestyle.
According to researchers, foremost among the reasons the loan shortage of sleep. The relationship between regular lack of sleep and obesity are already devoted a lot of research. The increased appetite for developing disorders and lack of sleep is associated with hormonal imbalance and the need to compensate for the shortage of energy at the expense of nutrition.
According to data in recent years, the average duration of sleep in the U.S., has limited from 9 to 7 hours a day.
In second place is the negative influence of certain chemicals that accompany contemporary everyday life - so called. endocrine disrupptors - compounds incorporated in the plastics and pesticides. These substances deplete the work of the endocrine system, regulating metabolism, which can lead to accumulation of fatty deposits.
Another reason leading to obesity, as it is strange, according to experts is the widespread use of air conditioners. In terms of the comfortable temperature reduces the consumption of calories you burn in the elimination of sweat or shivering from cold.
Among the other factors mentioned in the study are mass quitting smoking (nicotine suppresses appetite), side effects of some drugs, increasing numbers of women born in later life, the selective formation of couples in which obese people to also choose full partners, with the result that children are born genetically predisposed to obesity.
Specific factor and population changes are in North America, namely the rapid growth of the American Diaspora, representatives of which are characterized by high levels of obesity than Europeans.
No comments:
Post a Comment