The idea that one can diagnose illnesses by looking at the lunula of the fingernails is something most people have heard about. However, understanding one's health condition based on the depth of grooves on the nail surface is probably unknown to many.
A doctor told a reporter that ideally, the nail surface should have no horizontal or vertical grooves. Therefore, once it becomes rough, loses its luster, or even develops noticeable longitudinal stripes and feels full of grooves, it may mean that your body is currently in a state of fatigue, leading to physical weakness, persistent mental exhaustion, decreased immunity, and other issues. In addition, deficiencies in vitamins or trace elements can also cause vertical lines.
Nail development is influenced by various factors, especially the prominent vertical lines on nails which are closely related to diet, lifestyle, and age. For example, people who often stay up late or have depleted vitality are more likely to develop vertical lines on their nails. Of course, some young people may experience this due to colds or pneumonia; whereas in middle-aged and elderly individuals, it is mostly caused by aging, declining bodily functions, and difficulty in recovering from physical exertion in a short period. Therefore, specific disease diagnosis requires confirmation through other symptoms and a doctor's evaluation.
The doctor reminds that for those experiencing this condition, it is important to first establish good living habits. Additionally, dietary therapy can help by consuming diets rich in high-quality proteins such as dairy products, eggs, beans, fish, etc., while also taking in vitamins and trace elements like zinc, iron, and calcium to adjust bodily functions. The vertical lines on the nail surface will gradually disappear as a result.
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