Hi, It is difficult to judge without seeing them. Particularly the shape of the nails and the color are two of several factors that point to particular diseases. I cannot say in your particular case, however, thin and splitting nails indicate a nutritional deficiency. There s a lot but plain not enough food is one. lack of iron, or most vitamins are another. Vitamin C from fresh fruit would be an interesting vitamin deficiency that is quite rare now but specifically causes loss of nails. Deformity of the fingers can occur due to poor circulation which also does not help nail growth. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Matt Wachsman, Addiction Medicine Specialist