If some people’s nails like a yellowish its indicate a problem of lungs.
Some people’s nails yellowish and the nearest skin of the nails is white it indicate a person had blood related problem.
Half pink and half white nails indicate the kidney related problem.
If the skin nearest your nails is dry it means you have lack of Vitamin C and lack of proteins in your body. If the growth of your nails is slow it indicates lack of vitamin A and lack of protein in your body.