When it comes to rocking leggings and skinny jeans, thongs have become our best friend. But could your choice undergarments be bad for your health? According to a recent article on The Huffington Post, it depends. Not all thong wearers need to worry that their thong could be causing them health issues, but women with a history of recurring infections—urinary and/or vaginal—should either skip the thong or follow a few guidelines to reduce their risk of contracting an infection. One quick tip—cotton—particularly when it's that time of the month.