Stress can have an impact on a person's health, but you aren't responsible for how someone deals with work stress. It is also very possible that this would have happened no matter what, and he's just looking for "why" and grasping at straws.
Though I do relate to Dave, being someone who likes boring and simple solutions to business problems, while being pushed into solutions that seem overly complex and stressful for no good reason other than someone's ego and ladder climbing. This does cause me a good deal of stress, but that's on me to find a healthy perspective and ways to deal with it, since I'm not in a position to change the overall situation (short of finding a new job).
Though I do relate to Dave, being someone who likes boring and simple solutions to business problems, while being pushed into solutions that seem overly complex and stressful for no good reason other than someone's ego and ladder climbing. This does cause me a good deal of stress, but that's on me to find a healthy perspective and ways to deal with it, since I'm not in a position to change the overall situation (short of finding a new job).