Like it or not, you can tell a lot about a person's health by the condition of their nails.

For instance, if your nails are brittle or crumbly or simply don't grow, chances are good that you've got some sort of vitamin deficiency. Troubleshooting the easy way, you should start taking a good multi-vitamin if you aren't already. After that, try to consume lots of fruits and vegetables, as well as good oils, like grapeseed oil or olive oil. That's Sophia Loren's tip, after all.

Another easy way to improve your nails is to just let them be. To a certain extent, nail polishes and removers can take their toll after a while. Let your nails go back to their roots so to speak, and you'll be suprised with how quickly they start to look manicured without doing anything at all.