the intended group for which something is performed or marketed; the specific group to which advertising is directed
The target audience for the book is from young adults upward.
Happy to have people—too many of them, unfortunately, who only pay attention with one ear—be her target audience.
Based on this language it stands to reason that the target audience for this PSA would be those who actually own guns.
But for skeptics of evidence-based medicine, “natural” is a handy go-to word to make the target audience share their skepticism.