I wouldn't view them as victims or as sinners. I guess there are issues that need to be addressed because of the demographics of vulnerable populations, but it would be unjust to prototype them as above. These are individuals that need the health care system more than any other section of society and really it is a measure of a systems very functioning whether it is able to care for its vulnerable.

These individuals may be different from others due to their individual dynamics but also due to their community dynamics and all these factors play an important role in their biology. Their physiology may thus vary depending on the built environment.

Also I think language barriers, employment, immigration status, education play a big role in determining their health outcomes. It affects the way they treat their health, stresses and reach out for help. Most of these factors can be overcome though not all.