Your nails are warning you, if you have white spots on your nail then it is
because of zinc deficiency. If you have yellow nails then it is because of
fungal infection. If you have spoon shaped nail then it is because of iron
deficiency anemia. If you have vertical ridges on your nail then it is because
of B12 deficiency. If you have horizontal lines on your nail then it is because
of illness or malnutrition. If your nails are blue or purple in color then you
may have heart or lungs problem. If you have black line on your nail then it is
melanoma warning. And if you have curved nails then you may have lung or heart
disease. Follow for daily update.