Here is the problem with the government having the say on what mental conditions D/Q you from owning a firearm. They quite literally can make up any bull shit to bar people from owning a firearm. Take Anti-depressants? No guns for you. Sought help from a Psychiatrist for a tough time in your life? No guns for you.
That is what really scares me, the idea that anyone can get D/Qed from owning a firearm just for taking Zoloft at one point. Which about 50% of Americans have done at some point.