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Your stomach cells are exposed to the harsh stomach acids, if they were not replaced as rapidly as they are the stomach acid would not be able to be contained thus digesting itself and exposing the rest of your body to the acid.

As for the red blood cells our body can only replace about 1% of them per day, essentially there are around 20-30 trillion red blood cells in your body, replacing 200-300 billion cells that are so vital is no easy task. But its easy to assume that only a fraction are replaced every day to use each cell to its fullest life before recycling it.

On a side note every 7 years your a totally new you with 100% new cells.

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13y ago
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9y ago

To break down the cells the intestinal lining doesn't get too thick and prevent absorption of the nutrients. Correction: due to incredible wear and tear on the lining of the GI tract.

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12y ago

Every 48 hours

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Q: How often do red blood cells replace themselves?
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Related questions

Where does blood cells generate?

Blood cells generate in the bone marrow. The bone marrow creates blood often. The blood is then released into the bloodstream.


How often does the digestive tract cells replace themselves?

The body is constantly replacing itself. It was once believed to be over a seven to eight year period, depending if you were male or female but biologists are hesitant to put a true time on it but rather agree that it is an ongoing process.


Do blood cells regenerate?

A single red blood cell lasts about 100-120 days before it is consumed by macrophages and recycled. These cells are so abundant in the human body that about 2.4 million new red blood cells are produced every second in the bone marrow.


Why can you see only two white blood cells and many red blood cells?

because the red blood cells make up almost 45% of the blood composition while the white blood cells are only 1% in comparison. so the red blood cells appear more often than the white blood cells.


Why are white blood cells often used to study a persons genes?

because they are the only blood cells with a core .That means that they have dna


What kind of blood vessel often carries both oxygenated and deoxygenated blood?

red blood cells


Why are lysosomes found more often in animal cells?

# why do blood cells have so many lysosomes?


Are there white blood cells in blood transfusions?

Yes. This actually happens quite often in hospitals.


Why are cells important in your body?

The white blood cells destroy diseases while the red blood cells carry oxygen through out the body. So all in all the white cells are for you to not get sick often and the red blood cells to get oxygen to your whole body. Thanks!


How often do red blood cells replacate?

Every 48 hours


Where in your body does mitosis occur most often?

mitosis occurs most often in the skin where cells die frequently and blood since red blood cells die everyday. Areas such as the brain where cells last way longer and don't get damaged is where mitosis occurs the least


What disease is diagnosed by an excessive number of white blood cells and is often fatal?

leukemia