Nail color changes
Whitening of nails. Severe vitamin deficiency
Yellow nails. Frequent use of varnish shows the need to pay attention to the quality of the varnish
Nails become brownish-brown. Indicates changes in thyroid function
Gray or bluish fingernails indicate a lack of oxygen in the blood and may indicate heart or lung problems.

Examining the mirror of the nail, spotting
White spots. Appears with mild vitamin deficiency and depression
There will be transverse grooves. It is caused by the use of heat and cold. It is often observed after chemotherapy
Pale, cross-striped. Teach protein deficiency and pay attention to food intake. It is also worth showing the liver for examination
Vertical dark stripes. If it appears on only one fingernail, it is likely to be the first sign of skin cancer

Nail shape changes
If you notice the following changes in the shape of the nail, you should immediately consult a doctor.
Enlargement, thinning and softening of the nails may indicate liver, heart or lung problems.
Nails grow up. Indicates iron deficiency in the body
Thickening and hardening of nails. Show your heart and lungs. It is also yellow in psoriasis and eczema
Nails become brittle. Shows changes in thyroid function. In addition, age, excessive use of varnish, and the effect of detergents can cause breakage.