Given the decades of reporting around the negative health effects of stress, it should be a foregone conclusion that stress can certainly make you ill. The subtitle "Researchers may now know why" caught my attention, because it would seem that the cause-and-effect between stress and illness has been well understood for a long time.
What the report here discusses, though, is a recent study on the interaction of the immune system and nervous system.The study specifically focuses on mast cells, a type of immune cell. When they become overloaded, they "switch from being protective to actually pathogenic."
The research, of course, is focused on a pharmaceutical answer for this behavior. Needless to say, such drugs, if they are developed, will certainly have side effects and will demand a premium given the pervasiveness of stress. In contrast, the tools that I provide in Solving Stress are already available to you for free!