It’s possible that we’ve looked at our hands and noticed some lines on our nails. This almost always sparks curiosity and makes us wonder: Why do they appear? What can be done to make them go away? Lines on the nails can be a sign that we’re not eating as well as we should or that we might need to take better care of our health, among other things. Below, we’ll explain more about why these lines appear on nails, how they can be removed, and some useful tips to prevent them from appearing in the future.