No, it doesn’t.
But if your bra is too tight or too small the underwires can dig into your breasts and cause discomfort, pain or inflammation.
To find out how a bra should fit for comfort and support, take a look at our page on finding the right bra for you. You can also order our leaflet Your guide to a well-fitting bra.
Content last reviewed March 2012; next planned review 2014