That depends upon the purity of definition of 'processed'. After the cow or turkey is dead, processed means, essentially, anything done to the meat other than wrapping it. All ham is cured with something. Even freezing can be considered a process by some people.
Sould you be concerned? That depends on you and what kind or degree of 'health' you want. There are a lot of movies out about food production and processing. watch a few.