2023-07-14 02:30:00
Tens of trillions of cells make up our body. Few people know that our bodies are made up of many cells. Since these cells are co-destined to live with us, it is easy to think of them as living together for the rest of their lives. People generally think that cells have a much shorter lifespan than humans, so many cells die while we are alive, and cells die to fill the place of dead cells. Did you know that many new cells are created?
The lifespan of cells is generally short when the environment in which cells work is poor, so mucosal cells and leukocytes on the surface of the stomach or small intestine are the shortest at 1 to 5 days, and skin cells are short at 2 weeks, so we experience frequent shedding of swarms. will do Platelets last 10 days, red blood cells 4 months, liver cells 300-500 days, and bone cells 10 years. It is known to live until
The reason why the lifespan of cells differs depending on the type of cell can be seen in terms of cell damage and repair. A single cell contains regarding 6 billion biomolecules called DNA, which is the smallest unit of a cell. Damaged DNA must be restored to normal so that cells can function properly.
However, when some cells have too much DNA damaged during their activity, and it is more efficient to kill these cells and make new cells to fill them up than to repair the damaged DNA, our body makes this choice. Depending on the type, the lifespan is different.
There are many other causes of cell death, and the cause can be divided into two types: ‘necrosis’, which is killed by external factors, and ‘apoptosis’, which is self-destructing by genes, which are programs prepared in cells. External factors that cause cell necrosis include toxic substances, injury, infection, and interruption of blood supply. When cells die, inflammation can cause additional pain or damage in the body.
Unlike necrosis, cell apoptosis is often referred to as ‘suicide’ because it dies by itself, which is a program prepared in the cell. It plays an important role and is characterized by not leaving any harmful substances around. It is known that 50 to 70 billion cells per day in adults and 20 to 30 billion cells in adolescents die by apoptosis.
Serious problems can arise if the cell’s apoptosis doesn’t work well. If the cells to be removed are not removed, they can turn into cancer cells, and if too many cells die due to excessive apoptosis, organs or tissues cannot function properly due to the lack of normal cells, leading to neurodegenerative diseases such as Alzheimer’s disease and Parkinson’s disease. it gets caught
In order for our body to maintain health, first of all, it is necessary to minimize dying cells and replace them with newly created cells so that tens of trillions of healthy cells do not decrease in number and can function normally while maintaining an appropriate number. However, in order to do so, regeneration of cells in which new cells are created must be performed well.
Cell regeneration is also accomplished by genes prepared in cells, just like cell apoptosis, and there are two methods. The first is a method in which a single cell divides directly into two genetically identical daughter cells, commonly referred to as mitosis. Daughter cells made by mitosis and mother cells, which are the original cells, are completely identical in all respects, including DNA, function, and genetic information. Mitosis can be seen in most cells, such as skin cells, muscle cells, and liver cells.
The second form of cell regeneration is a method of regenerating cells that cannot be reproduced by dividing by mitosis. First, stem cells divide by mitosis to increase the number of cells, and then differentiate into various types of dendritic cells. An example can be found in hematopoietic stem cells in the bone marrow. Since blood cells such as red blood cells, white blood cells, and platelets do not undergo mitosis, hematopoietic stem cells divide by mitosis and then differentiate into red blood cells, white blood cells, and platelets.
Cell regeneration, in which stem cells divide first and then differentiate into branch cells, can also be found in brain cells. Since brain cells do not undergo mitosis, it was known until 20 years ago that once brain cells die in the adult brain, they will not regenerate. Cellular differentiation was confirmed.
In this way, many cells in our body die or are damaged, and we try to maintain our health by restoring the damaged cells to normal or dying on their own without our knowledge, and replacing the dead cells with new cells. If cells die or are damaged and have difficulty in repairing and regenerating cells, it is difficult for us to maintain health.
Therefore, in order for us to maintain the best health for a long time, it is necessary to reduce necrosis or damage of cells, while making efforts to ensure that cells are repaired and regenerated well. New Start (refer to Life Story 6) that creates an environment is to improve wrong lifestyle habits.
Among the eight items of New Start, the first life diet is to eat a variety of whole plant foods including fruits, vegetables, and grains, but not to eat certain foods unbalanced. It is also important to reduce intake of refined bad carbohydrates, saturated and trans fats, salt and alcohol.
Along with this, it is also important to practice the rest of New Start: exercise, water, sunlight, moderation, air, rest, trust and love.
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