Originally Posted by
dolphin
Something natural is something that is NOT caused by human kind. So, if only humans can lucid dream, then it is not natural, but if other animals can, then it is. Various primates and elephants also have the dreams, memory, self-awareness, and learning ability needed to lucid dream. It can't yet be proven that these other animals with the abilities needed for lucid dreams can have them, so it can't yet be proven whether lucid dreaming is natural or not.
The ingredients of lucid dreams are natural, but the combining of them might not be. I don't see how frequently lucid dreaming could be harmful, though.