Indeed, we spend more money on healthier food by comparison to fast food products. While the former require a larger amount of money, the latter is accessible to even low income families. By comparison to smoking and alcohol, obesity is not different at a first glance. They all create a certain dependence of a taste or flavor. At the same time, this dependence can be stopped and controlled through a strong will. However, obesity can transform a healthy body into a heart suffering one, with circulation problems and even psychological disorders and social rejection.

Obesity has become a strain even for the health care system. This is due to the fact that it represents the cause of heart diseases, blood pressure, and weakness of the immune system because there are not enough vitamins consumed and too much...

Thus, the health care system, by providing assistance in obese related diseases, may well override its budget and deprives others of medical care.
References

Evangelista, Arlene, et al. The Fast Food Nation: Obesity as an Epidemic. Department of Biological Statistics and Computational Biology, New York: Cornell University, Ithaca, 2004 15 January 2008 http://mtbi.asu.edu/downloads/Obesity.pdf

Medical News Today. Obesity Among Women in U.S. Becoming More Socially Acceptable, Study Says. 2007. 15 January 2008 http://www.medicalnewstoday.com/articles/79184.php

Sibbald, Barbara. Obesity may soon be leading cause of preventable death in U.S.. Canadian Medical Association Journal, 2002. 15 January 2008 http://www.cmaj.ca/cgi/content/full/166/5/642-a