Q: Would it be possible and safe to stimulate my boyfriend's nipples enough until he produces lactation?
A: It would be fairly difficult to stimulate a man's nipples enough for them to begin lactating, but it is possible. If you want to cause your boyfriend to lactate, this can be done by having him use a breast pump on his nipples a few times a day for a few weeks. This type of stimulation can cause a person's body to product prolactin, which can cause breast lactations. This process is easier to bring about in women, given that women produce more prolactin than men naturally, but it is theoretically possible for men to do the same.
You can find an account of one male reporters journey to produce breast milk here. He wasn't successful, but he gives good tips on how a many could be. The Young Turks have covered a similar story here. You can also find more information on male lactation here.
Answers provided by Dr. Ross Avilla
Dr. Ross Avilla has been teaching Human Sexuality since 2013 and has a PhD in psychology from UC Davis. Dr. Avilla is not a clinician and all information and advice offered on this website is for educational purposes only.