What is the best way to get healthy fingernails?

Get alot of calcium (drinking milk, eating cheese, taking calcium supplements). Getting a proper amount of iron (eating meats, taking iron supplements). Also, using nourishing varnishes on your nails. At most drug stores you can buy vitamin enriched nail treatments. For thin, brittle nails, you can buy nail hardeners. These typically look like clear nail polishes. It's also important not to pick or peel your nails, cutting them with a nail clipper (not down to the root) and then filing to shape is best.