If Your Nails Keep Splitting, You Are Deficient In THIS Mineral! DavidWolfe.comDecember 8, 2016 When something isn't quite right on the inside of your body, it has special ways of giving you a heads up. If you notice that your fingernails have been splitti... FeaturedHealth & LongevityLifestyleMotivationResearchSafetySelf-Help 2