Ulcers

I may be dating myself but when I was younger it seemed like ulcers were a thing I was to be concerned about getting.  There were some apparently effective adverts on tv about ulcer treatments and such.  Milk of magnesia had some good commercials.  One of the big factors publicized at the time was stress.  Now, I know stress is variable, but I conflate people with anxiety disorders as stressful.  So, it seems that people who have anxiety disorders or PTSD or OCD or what not would have a lot of ulcers.  Is this the case?