Wow. That's kind of crazy.
Thanks for detailed reply.
Hasn't there been studies on the connection to these types of events and anti-depression drugs?
Nope. There have been zero federal studies on those issues in the last 20 years. If firearms were part of the research question, its funding is blocked.
There are private organizations and universities that do fund studies. However, the scale is typically smaller than government studies and the results are dismissed by pro-gun organizations. NRA, GoA, NSSF, and other pro-gun orgs are very effective at disseminating information, controlling the message, and condemning research that does not support results they favor.
Just Google, "harvard gun study" to get an example at how effective pro-gun is at controlling information. There's one Harvard study that supports pro-gun, one. On the other hand, there are dozens and dozens and dozens of Harvard studies saying gun control is good. Yet, that one Harvard study that is pro-gun gets a lot more attention than the multiple Harvard studies saying otherwise. You'll have to search a little more to find them. Why? Pro-gun is very good at controlling the narrative. They have hundreds of web sites dedicated to gun news, blogs, forums, and other social media sites doing their bidding.
Think of it like global warming science. For every one study saying global warming isn't occurring there are fifty studies saying global warming is occurring.