My son is 3.6 years age. His hands and legs nails are going as layers and a new layer is getting started once the nail starts peeledoff. A photo of his legs nails is attached. These days he is crving for sugars and adicted to chocolates. I stopped chocolates and replaced with Dates. Now i am worried if these are symptoms of any deficiency or any extra intake? Or if really there is a problem to think? Kindly help if there is anything i should take care precautionary. These symptoms i am observing since more than a month. His nails started with one finger and now gradually all the fingers are showing like that.