Is it okay to rejuvenate and become a child?
Aunt Liu is 58 years old this year. Her hair began to turn white 10 years ago. Because she was older, she also accepted this change calmly and never dyed her hair once.
However, just 20 days ago, Aunt Liu's hair began to slowly turn darker and her skin gradually improved. Now Aunt Liu's hair is mostly black.
Others say that she is returning to her youth, but Aunt Liu is very worried. She heard that people with white hair are not prone to cancer, and her white hair turns black is a signal of cancer?
. Some people say that white hair is not prone to cancer. Is it true?
David Fisher, director of the Department of Dermatology at Harvard University, Through research, it was believed that the appearance of white hair is actually a human body's self-protection mechanism. The white hair grows on the head, which represents the stem cell gene that produces melanin has been destroyed and has been cleared. If these damaged stem cells are not removed in time, they may replicate wildly in the body, eventually forming cancer cells, causing cancer to cause cancer . Under the same stress mode, people with gray hair are at a lower risk of developing cancer than those who are not.
Shanghai Jiaotong University doctor of medicine Zhou Xiaobo said that the statement that people with more white hair have a lower risk of cancer is irrational. Melanocytes exist in many parts of the human body, and the causes of melanocyte malignancy and the formation of gray hair are very complicated. There is no so-called conclusion in the medical community that white hair is not prone to cancer, and there is no direct relationship between the two.
Let’s look at the reality. On December 21, 2020, the National Cancer Center magazine published an article to count the statistics on cancer incidence and death in China in 2015, which showed that the number of new cancer cases in men and women in reached its peak at the age of 60-64. means that the elderly suffer from cancer the most, which is obviously contrary to the ability of gray hair to fight cancer.
In life, some people's hair seems to have the skill of "rejuvenation" and will turn black after it turns white. Why is this?
2. Why do some people’s white hair turn black?
tells you very clearly that whitening hair means exhaustion of pigment stem cells in hair follicles. This process is difficult to reverse . Then why do some people's gray hair turn black?
. Reversible
You can often see some characters on TV "white hair overnight" because of "heartache". This situation may also be discovered in reality.
Columbia University A study published in bioRxiv pointed out that some people have gray hair due to stress. After eliminating stress factors, the hair can be restored to its original color, but it can only be applied soon after hair turns white.
. Eliminate the primary disease
Some people have gray hair due to disease factors. For example, people with protein malnutrition have light red/gray white hair. People with phenylketonuria have their hair may be light yellow, and have thyroid disease /pituitary function is reduced, which will also cause hair to turn white. Under the premise that melanocytes in the body are normally present, removing pathogenic factors can restore the hair to blackness.
White hair suddenly turns black, which may be a signal from the disease or even tumor. For example, when there are some tumors in the body, will promote adrenaline , increasing the secretion of androgens in the body, and then causing gray hair to turn black in a short period of time.
In addition to the sudden blackening of gray hair, these "rejuvenation" situations in the elderly also need to seek medical examination in a timely manner.
3. Key points: These manifestations of "rejuvenation" may be warnings of diseases or cancer
, Menopause and menstrual period
Women have uterine bleeding again after perimenopausal amenorrhea for one year. Beware that it is caused by disease factors. Benign diseases such as endometritis , endometrial polyps , submucosal fibroids and benign ovarian tumors, or malignant diseases such as endometrial cancer, cervical cancer , and ovarian malignant tumors may induce the occurrence of this. clinical data shows that the probability of malignant change in women who have menopause is 22.7%, among which endometrial cancer is the most common.
. Older older new teeth
The appearance of new teeth in the elderly may be due to several factors. First, wisdom teeth in the mouth are occupied by other teeth, and they only erupt after the resistance is lifted in old age; second, the permanent crown is damaged and the roots are broken in the alveolar socket, and the residual roots are left in the alveolar socket, exposed after the gums of the elderly are retracted, and are misunderstood as new teeth; third, due to endocrine disorders in the elderly or tumors , the gums appear hard, red, swollen and painful, like mass growing in the teeth, which is mistakenly believed to have new teeth.
The wrinkles on the face suddenly disappear. You need to be wary that it may be caused by systemic sclerosis . This disease is an unknown cause. Collagen fiber deposition causes skin thickening, fibrosis, and , causing internal organs to be affected. When systemic sclerosis is in the sclerosis period, the patient's face will gradually become a "mask face", including the disappearance of headline lines, the tip of the nose becomes sharp, the thinning of the lips, and the restriction of mouth opening, and there is no wrinkle on the face.
. Presbyopia becomes better
Presbyopia becomes better suddenly. You need to be alerted that it is caused by cataract . In the middle and early stages of Bainet, pseudomyopia will offset some presbyopia and the illusion of vision recovery occurs. In this case, vision recovery can usually only last for 1 to 6 months.
. The appetite suddenly becomes better
The appetite of the elderly will decline when they get older, but the appetite suddenly improves in a short period of time. Suddenly, it is caused by diabetes , hyperthyroidism or centripetal obesity . Among them, diabetic patients will also experience excessive drinking, urinating and weight loss while eating more.
When people reach middle-aged and elderly, if there are some "child-returning" phenomena that violate natural laws, you must be vigilant and seek medical examinations in time. #Telebrity Creation Challenge#
Reference:
[1] "The pressure is too great, the hair turns white? The latest research reveals: "One night of white hair" may be reversible". Wenhui.com. 2020-06-13
[2] "Is this true that people with a lot of white hair not prone to cancer? 》. Popular Science Fuyang .2022-07-06
[3] "Growing white hair or anti-cancer reaction". Chinese Journal of Traditional Chinese Medicine
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