A small wound on the skin will heal in a few days; The nail broke and soon grew new; Even some bone fractures can be fixed by self repairThe human body has a magical self-healing ability, with some organs continuously renewing and regenerating, but there are also important organs that are "unable to repair", such as the heart and brain.Life Times invites experts to interpret the "repair function" of the human body

A small wound on the skin will heal in a few days; The nail broke and soon grew new; Even some bone fractures can be fixed by self repair

The human body has a magical self-healing ability, with some organs continuously renewing and regenerating, but there are also important organs that are "unable to repair", such as the heart and brain.

Life Times invites experts to interpret the "repair function" of the human body.

Interviewed experts

Sun Dejin, Chief physician of Neurology and General Medicine Department of Shenzhen Third People's Hospital

Author of this article | Shi Jie, a journalist from Life Times

Editor of this article | Xu Wenting

The human body is "self repairing" every day

Geckos "survive by cutting off their tails," while starfish rearrange their cells... Compared to the powerful self repair ability of animals, human repair ability continues to deteriorate. This may be because the probability of a person losing an arm or leg throughout their lifetime is very low, and the ability to "regenerate" appears redundant.

Of course, the easily damaged organs of the human body have evolved powerful repair functions.

Blood vessels, bones, etc

Strong regeneration ability

The regeneration ability of skin, small blood vessels, red blood cells, white blood cells, bones, bone marrow, cartilage, muscle cells, etc. is very strong.

To ensure blood supply, small blood vessels around blocked blood vessels may become thicker, longer, and even grow new blood vessels; Children's fractures generally do not require special treatment and can be repaired through self-healing ability.

Liver, small intestine

Fast update speed

The human body is undergoing repair and renewal every day, and the liver and small intestine belong to the category of "super capable individuals".

For many people who drink alcohol, as long as they don't drink for a week, their liver function can be well restored. Research has shown that after 75% of the liver is removed, it can be restored to its original state in only 4 months.

Intestinal cells are the fastest cells in the human body to update, with an average of once a day or two.

Lung and kidney

Strong compensatory ability

Lung and kidney

When some Nephron are damaged, the "leisure" Nephron will quickly replace them and appear compensatory hypertrophy to ensure the urination function of the kidneys.

The same is true for lungs. If some lung tissue is damaged or lost due to disease, the remaining lung tissue will expand the healthy alveolar cavity to increase the respiratory area, strengthen Gas exchange and maintain respiratory function.

Some organs are not renewable

There are many "members" in the non renewable group, among which heart and brain damage is difficult to reverse.

heart

When the coronary artery is occluded for more than 20 minutes in a sudden acute myocardial infarction, the ischemic myocardial cells begin to appear irreversible necrosis.

heartheart

brain

brain

120brainbrainbrain

Good habits maintain "repair power"

The younger the cell, the stronger its repair ability. At the same age, strong repair ability is often attributed to powerful genes, which are influenced by a combination of nutritional status, lifestyle, and disease conditions.

Supplementing nutrition

Organ cells need nutrients to nourish them, with good nutritional status and rapid cell proliferation, which helps to enhance repair ability.

Scientific diet ensures the nutrition of various organs and helps to enhance repair ability; Both malnutrition and overnutrition can have adverse effects on organs such as the intestines, stomach, liver, and kidneys, affecting the whole body and reducing cell repair ability.

Maintain body vitality

People who follow a healthy lifestyle tend to be healthier and more energetic, which is also reflected in the repair ability of cells.

Adhering to a healthy lifestyle, living in moderation, exercising appropriately, and maintaining a pleasant mood are effective ways to enhance repair ability.

Do not overdraw excessively

Some organs and tissues, no matter how powerful their repair ability is, cannot withstand hard work. To understand the functions and operating mechanisms of organ tissues, and to use them reasonably.

Be alert to disease symptoms

For non renewable organs, in addition to daily health care, it is also important to always be vigilant against signs of damage. Early warning and emergency medical treatment are the only effective measures.

heartSqueezing pain occurs in the left precordial area for 3-5 minutes and alleviates during rest, possibly due to angina; If the pain persists for more than 10 minutes and does not relieve during rest, it is necessary to be vigilant for myocardial infarction and seek medical attention immediately.

brainStroke requires remembering the "FAST principle", which refers to the sudden appearance of facial deviation, mouth deviation, and bilateral asymmetry; A stands for arm, indicating that one arm is weak and sagging; S stands for speech, which refers to sudden lack of fluency in speaking; T is the time. When the above situation occurs, be alert to stroke and make an emergency call to 120 as soon as possible.

Editor of this issue: Yang Meng

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