I have never read a "GOOD" book on moles. Most only tell you that when the mole changes to watch for cancers. The old cancer black salves were used to eat them off the body. My Mom had some really large ones and removed them all this method and did not seem to have any ill side effects, why they appear in the first place is not known to me, you probably can do a search on the web and find a medical source that would explain the nature of moles and human health.
If I had one appear I would try cleanses and if that didn't work, I probably would melt the sucker away with the old style acid salves.