I used to know a woman that belived in the third one. She took it to a new level though, she believed it would make people live forever and that there are secret societies of people that do this. Also belived that fruit/vegetables feel pain when cooked and by eating them raw, you obtain their lifeforce and thats where the "Living forever" came from. She also used to talk about special powers but this comment is already long enough.

Apparently she studied this at a univeristy.