The answer to your question is a definitive "yes"...
There is no doubt that stress plays a major role in health issues. Changing/getting a new job, moving, divorce, and loss of a loved one, these are all situations that most would agree, cause increased stress levels. These factors can trigger situational anxiety, or even actual anxiety disorders/panic attacks.
For most of us here on the Anxiety Zone site, we have experienced the "loop" effect of anxiety feeding and causing more anxiety. This puts our body into a constant fight or flight state, thus releasing stress hormones such as adrenaline and cortisol. So this stressful state just feeds on itself.
Continuous stress suppresses our immune system, making us more susceptible to infection and even some forms of cancer. Many digestive disorders are triggered by stress. Stress also causes muscle tension, short-term memory loss, and premature coronary artery disease, which can lead to a heart attack.
These changes are not something that occurs overnight, as many health problems will not arise for years or even decades.
It is as important that we care for our mental health, and that will in itself improve our physical health. Simple things such as daily exercise, eating a healthy diet, drinking plenty of water, and getting proper sleep can all help. And seeing a doctor at least on a yearly bases for a routine physical and appropriate lab and diagnostic tests is also important.
Treating anxiety disorders with appropriate medication, therapy, exercise, and the use of fish oil/omega 3, can break the anxiety cycle and add quality and quantity of life.
The very best to you, Tony!... Chuck