Haitians have those voodoo folks that can turn people into a zombie state just using chemicals from plants.
You do know that the voodoo doll thing with the pins and needles is a product of Hollywood/pop culture and not an actual real thing, right?
Shamans, witch doctors, and the like never used "real magic." The so-called "magical" chemicals they use would just make a person high and experience hallucinations and stuff. It was just a drug, no different than modern drugs like crack and marijuana and stuff like that. Any so-called healing they could produce was just the placebo effect.
There's a documentary and some interviews on a guy whose family thought he was dead but he was kept as a slave by someone who kept him in a trance for years. It's not magic, no, but to say there isn't anything to it is denying some truth. Even in things that sound overblown and ridiculous there is often a kernel of truth somewhere.
Source for those interviews and documentary? There are plenty of drugs that can induce a trance-like state, and drugs can even put you in a coma. That doesn't mean there is anything magical about it. Using drugs to keep someone in a trance-like state for years is completely believable. Using magic and spells to do that same thing is 100% nonsense.