Having good-looking nails is great because every time you stretch a hand, people notice your manicure (or the lack of it) and this creates a positive or a negative impression about you but there is more to nails than pure vanity. Nails are not only for decoration. Rather, they have another very important role – they serve as a health indicator. Many diseases and conditions manifest themselves on the nails and if you know how to read these signs, you could be warned in advance about an internal disease you …