Increasing nipple sensitivity

I have a female friend who is very interested in pursuing a nipple induced orgasm. We have found that with prolonged nipple and breast play she can come very close, but not quite reaching the goal. Trying to be a good friend, I did some research and found some interesting abstracts. I'm curious if any of the ladies here have pursued this sort of goal, and if either of the linked articles strike a chord with you.

https://pubmed.ncbi.nlm.nih.gov/32397852/

https://www.scirp.org/journal/paperinformation?paperid=70208

Wife is not into it--but we have discovered I am--extremely sensitive nipples--she will suck one play with another --have almost climaxed strictly from that--it is now a part of our routine when having sex--would highly recommend it to all guys--try it

@MysteryDream Those were interesting articles. Helping to restore sensitivity after surgery feels like a very worthwhile effort. Glad to know there is research going into that process.

I don’t have any experience with the medication approach, but I have read that the small screw style suction devices increase sensitivity temporarily after they are removed. I don’t know if there are any long term benefits. More studies will need to be conducted.

What other techniques is your friend trying?

Interesting that all 6 researchers on that study were men. I wonder what the chats are like at social gatherings? "So Susan, what is John researching these days?" 🤭