The United States has the biggest number of people in the world that are struggling with obesity. It refers to 30.6% of population. The fight against obesity should be now the most important health and civilisation challenge, but it is not.
What is more, it is true that people today have not enough outdoor exercise, too often sit in front of TV or computer, but the problem of obesity is associated primarily with inappropriate food.
Most
of us are aware of the consequences of being obese. The risk of heart
disease, stroke and cancer is growing rapidly. So why do we eat junk
food?
As shown in the majority of research (graph on the basis of American Dietetic Association) for people junk food is cheap, quickly and convenient. Compared to other food it is something that working people and ordinary people can go out and enjoy.

N.B.
references:
http://content.moneyinstructor.com/2106/fastfoodmarket.html
http://smallbusiness.chron.com/fast-food-marketing-strategies-3408.html
http://zapytaj.onet.pl/Category/016,009/2,166701,Dlaczego_ludzie_siegaja_po_fast_foody.html
http://www.savelife.org.pl/dlaczego-nie-warto-jesc-fast-foodow.html
references:
http://content.moneyinstructor.com/2106/fastfoodmarket.html
http://smallbusiness.chron.com/fast-food-marketing-strategies-3408.html
http://zapytaj.onet.pl/Category/016,009/2,166701,Dlaczego_ludzie_siegaja_po_fast_foody.html
http://www.savelife.org.pl/dlaczego-nie-warto-jesc-fast-foodow.html