White spots on fingernails may be caused by poor digestion, resulting in long-term malnutrition, which in turn affects the absorption of various essential elements, such as calcium and vitamins. This can lead to abnormal growth of the fingernails, resulting in spots or lines of white spots, which need to be supplemented in a timely manner. It may also be caused by chronic diseases, such as chronic liver disease caused by hypoalbuminemia, which requires timely medical treatment, do not overwork the body, and pay attention to physical conditioning.