When Maria Delgado noticed a dark streak under her big toenail, she assumed it was from dropping her gym bag on her foot. Six months later, that seemingly innocent mark led to a diagnosis that saved ...

Here’s some good advice for dealing with a peculiar beauty trend happening this summer: Look down at your own risk. Long toenails — styled, of course — are apparently popular among certain people, and ...

This is Everyday Science with Clare Wilson, a subscriber-only newsletter from The i Paper. If you’d like to get this direct to your inbox every week, you can sign up here. Hello, and welcome back to ...

While most people are familiar with the appearance of healthy toenails — smooth, light pink, and evenly colored — changes in their look can sometimes raise concerns. When you notice spots, streaks, ...