The linked article is about public fat and it’s impact on health and the national health care network of Canada. Canada can make such broad connections because there is a national health care network and the data available for analysis is truly enormous.
Off the top comes this statistic and its impact is enormous: The study estimates that if obesity were not a factor, doctor visits in Canada would decrease by 10 percent. The decrease would be even greater if you take into account problems related to type 2 diabetes, which is also directly related to obesity and poor diet.
A 10 percent reduction in doctor visits does not mean a ten percent reduction in cost but a mega reduction in cost because the diseases related to obesity are: Diabetes, Cancer, Urinary incontinence, Depression, Chronic renal failure, Gout, Erectile dysfunction, Gastro-esophageal reflux disease, Stroke, Enlarged heart, Congestive heart failure and the beat goes on.