Does social class discrimination contribute to poor health?

Can social class discrimination cause your health to decline? That doesn't really seem to make sense, at least to me. I can see that being poor can cause you to have lower health. You have less money, you can't afford medicine, you get sick. But, discrimination against a class? How does that cause you to have poor health?

This article says that stress is a big factor. Being in a lower class and having less money can lead to increased stress levels. We all know that stress can make us feel lousy, but it can also affect our actual health. Researchers at Cornell University studied a group of 17 year olds to see the affect of discrimination on class. 

First, they were asked questions based on their social class background and measured their perceptions of discriminations. Next, they did physical tests. They took their blood pressure and  took urine samples to measure the levels of stress-related hormones. These factors form an "allostatic load", which is a term that describes the negative health changed caused by exposure to frequent stress. 

Teens that grew up in poverty said they experienced more discrimination and it turned out that their allostatic loads were higher. 

The article then goes on to talk about how we can fix this. Americans are very big on no racial discrimination. But when it comes to social class discrimination? Americans tend to pretend that it doesn't exist, because America is supposed to be a "class-less" society. The article says that talking about social class and social class discrimination in schools, to children, is a start. But I don't think that's good enough. We need to talk about this to everyone, let everyone know this is a problem, and get everyone to work on a solution. Not just children.