I think there are studies on it.

I take CBD, it did help me for 3 months before it stopped working. I had to go with a CBD and Hemp mix but it still works the same. It helps me with my anxiety (and also makes me sleepy too at night). It doesn't make you high, well it doesn't make ME high but everyone reacts differently to this type of stuff, my mom gets high off of this stuff so she refuses to take it and my dad gets a lil buzz while my sister also gets nothing but getting tired.

I think it works well for a lot of people, and it did help reduce my panic attacks a lot, but after a couple months it started making my disassociation a lot worse so I had to stop