Can Humans Die From Worms?

Yes but not because we don't die from their presents in fact a person can have worms in themselves for a very long time without much problem being done. But once there are too many of them then they can be hazardous. Or the could also be a problem when it comes to them reproducing (guinea worms)

It depends on the type of worms, there are ones that can inhabit your brain or blood and can lead to death but they are very rare

Yes, I think it happens a lot in third world countries, the worms take all the vitamins, nutrients, etc. That the body needs to survive, and then the person dies.  Ugh.  What a very bad way to go.

It depends on the type of worms

Yes, worms and parasites are extremely serious. If not treated fast enough, there is a very good chance of the human dying. If you are talking about your dog, take him/her to a hospital, immediately.