That's true. I also thought of something like state secrets where a government agent might show up one day and make you disappear.

But that type of information is only indirectly dangerous. The actual danger is the government agent or your personal actions based on misinformation in the case of antivaxx.

I was thinking more in terms of information that is objectively dangerous. Just ingesting the information alone is enough to cause damage.

I was also reminded of an article I read recently about artists and animators who worked on the newest Mortal Kombat game suffering from PTSD due to the graphic nature of their art and the reference materials they had to use.