Although, I'd certainly say that there is an entity to blame for many of the diseases of today. It's not the fault of those who're ill, it's the fault of those who're giving us the wrong information. Our government and the AHA, ADA and AHA are all giving us the wrong information on nutrition and how to be healthy. The low fat, eat your grains and get plenty of aerobic exercise meme has been promoted for the last 40 years or so by those charged with giving us good advice and it's untrue. I and millions of others have done just that since it was introduced and it hasn't kept us healthy, it's made a huge amount of the population fat and sick. Look at all of the auto-immune diseases that were nearly unheard of before that time. The food pyramid, which so many believe to be based on science was created by politicians!
Ancel Keyes, who first hypothesized that a low fat diet was the most heart healthy, studied the data from 22 countries and when the evidence didn't support his theory, he threw out the data from 15 of those countries and pretended that the he only studied 7 countries and that his theory was supported by the data! What a crock. And no one questioned him and we've been doing the wrong thing, based on skewed data ever since. That's not science, it's politics and it's made the corn and wheat industries extremely wealthy. Not to mention the pharma co. that just can't wait to "treat", but never cure us.
Here's a great, free video that explains what happened. Unfortunately not by an American doctor, as most are pretty firmly entrenched, but by a doctor from Sweden, where they also have great health care for their citizens.
http://vimeo.com/couchmode/ancestralhealthsymposium/videos/sort:newest/29464690