Ayurveda considers nails as the waste product of the bones.
If the nails are dry, crooked, rough and break easily, it indicated a predominance of the
vata constitution. Soft, pink, tender nails that are easily bent are indication of a Pitta
constitution. When the nails are thick, strong, soft and very shiny, then Kapha
Longitudinal lines on the nails indicate
the digestive system. Transverse grooves on the nails may indicate the presence of
long-standing illness or malnutrition.
Yellow nails indicate a delicate liver or jaundice. Blue
nails are manifestation of a weak heart. Undue redness shows an excess of red blood cells.