Pierced nipples do not cause issues for a breastfeeding mother. Generally speaking, the piercing will not affect the ability to produce milk for the baby...
With freeing the nipple being a thing, it’s easy to understand why so many women (and sometimes men) see a nipple piercing as something monumentally...
A lithium orotate beverage was marketed as “lithiated lemon soda” in the mid 1900s, apparently to make it seem healthier but eventually it was stated...