A little warning about nipple piercings. Chose your jewelery wisely. It is a common place for migration if you have the wrong shape ring, and it also depends on breast shape and size. I say this from experience, mine migrated within 6 months of getting it and had to come out. I had a ring in when I should have went with a bar bell. Even a D-ring would probably have migrated. It was the pressure of the bra against the ring continually that moved it through the soft tissue while healing. My husband's lasted way longer than mine. Yes it did increase sensitivity, almost painfully sometimes.

Hope that helps a bit.