If you're a runner, you know that black toenails are common—but that doesn't mean you have to put up with them. Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a ...

Soccer superstar Cristiano Ronaldo posted new shirtless photos that show off his muscled physique – and painted black toes – while lounging on a megayacht. The 38-year-old Portuguese footballer wore ...

Eagle-eyed social media users noticed the black toenail and were confused Ronaldo posed proudly with his son before posting the photo on his Instagram LISTEN: Was 'Fergie Time' real? Veteran Premier ...

Eagle-eyed fans recently spotted Cristiano Ronaldo’s black-painted toenails and swarmed his comments with curiosity. We looked into why and the reason might surprise you The Al-Nassr club caption has ...

Trauma or injury commonly causes a black toenail due to bleeding under the nail. Repetitive sports activities can lead to runner's toe, causing the toenail to turn black. Malignant melanoma, a serious ...