The plot of turning gray hair overnight has appeared many times in movies and TV dramas. In ancient records, there are also people whose hair turned gray overnight due to excessive mental stress. Even in modern society, this has happened to some people. phenomenon. But most of them have a lot of white hair added overnight, and their hair will not all turn white at once like in movies and TV shows. So since this situation exists, what are the reasons that cause people to suddenly grow a lot of white hair? Let’s analyze them one by one below. Excessive mental stress and fatigue

No matter what the reason for the sudden graying of hair, it shows that the person's physical condition has indeed declined, which makes his originally black hair turn white in a short period of time. Generally speaking, it is related to overwork of the body and excessive mental stress, because overwork and extreme mental stress will cause a sharp decline in physical condition, disorders of the endocrine and nervous systems, and imbalance of qi and blood in the internal organs, resulting in weakness of qi and blood. , The blood does not transport nutrients in time, which leads to a large number of gray hairs. In situations like this, knowing how to relax and relieve stress, protect your kidneys, and arrange adequate sleep time can effectively alleviate the problem. Over-stimulation and anxiety

The most common reasons for people to grow old overnight are generally great mental stimulation. This kind of stimulation is so great that the person can't bear it and almost has a psychological collapse or has already collapsed, which further affects the person's health. The body's endocrine and nervous systems lead to dysfunction of the body's internal organs. In this case, the body's qi and blood will also be affected, and the nutrition of the hair follicles cannot be replenished in time by the blood or even interrupted, so the hair follicles and hair will soon turn white. Excessive tension and anxiety, and too much mental stimulation are the main causes. Pathological reaction

There is another reason for the sudden increase in gray hair which is pathological reaction. That is, a certain disease suddenly occurs in the body, which causes the hair to quickly lose nutrition and turn white. Generally, it includes coronary heart disease, arteriosclerosis, pernicious anemia, myocardial infarction, hyperthyroidism and autoimmune diseases.