My nails have lateral dents. What is missing? Is it harmful to health?

If there are marks on your nails, your health index is not good enough. If your health index is good, your nails are smooth, pink is better, and the more sunshine on your nails, the bigger the better. Your nails are probably too tired, leading to physical weakness, or poor sleep quality, sub-health! Need to adjust eating habits, sleeping habits, exercise habits!