What are stem cells? – Craig A. Kohn

Imagine two people are listening to music. What are the odds that they are listening to the exact same playlist? Probably pretty low. After all, everyone has very different tastes in music. Now, what are the odds that your body will need the exact same medical care and treatment as another person’s body? Even lower. As we go through our lives, each of us will have very different needs for our own healthcare. Scientists and doctors are constantly researching ways to make medicine more personalized. One way they are doing this is by researching stem cells. Stem cells are cells that are undifferentiated, meaning they do not have a specific job or function. While skin cells protect your body, muscle cells contract, and nerve cells send signals, stem cells do not have any specific structures or functions. Stem cells do have the potential to become all other kinds of cells in your body. Your body uses stem cells to replace worn-out cells when they die. For example, you completely replace the lining of your intestines every four days. Stem cells beneath the lining of your intestines replace these cells as they wear out. Scientists hope that stem cells could be used to create a very special kind of personalized medicine in which we could replace your own body parts with, well, your own body parts. Stem cell researchers are working hard to find ways in which to use stem cells to create new tissue to replace the parts of organs that are damaged by injury or disease. Using stem cells to replace damaged bodily tissue is called regenerative medicine. For example, scientists currently use stem cells to treat patients with blood diseases such as leukemia. Leukemia is a form of cancer that affects your bone marrow. Bone marrow is the spongy tissue inside your bones where your blood cells are created. In leukemia, some of the cells inside your bone marrow grow uncontrollably, crowding out the healthy stem cells that form your blood cells. Some leukemia patients can receive a stem cell transplant. These new stem cells will create the blood cells needed by the patient’s body. There are actually multiple kinds of stem cells that scientists can use for medical treatments and research. Adult stem cells or tissue-specific stem cells are found in small numbers in most of your body’s tissues. Tissue-specific stem cells replace the existing cells in your organs as they wear out and die. Embryonic stem cells are created from leftover embryos that are willingly donated by patients from fertility clinics. Unlike tissue-specific stem cells, embryonic stem cells are pluripotent. This means that they can be grown into any kind of tissue in the body. A third kind of stem cells is called induced pluripotent stem cells. These are regular skin, fat, liver, or other cells that scientists have changed to behave like embryonic stem cells. Like embryonic stem cells, they, too, can become any kind of cell in the body. While scientists and doctors hope to use all of these kinds of stem cells to create new tissue to heal your body, they can also use stem cells to help understand how the body works. Scientists can watch stem cells develop into tissue to understand the mechnanisms that the body uses to create new tissue in a controlled and regulated way. Scientists hope that with more research, they can not only develop specialized medicine that is specific to your body but also better understand how your body functions, both when it’s healthy and when it’s not.


  1. if funded by the goverment one can become imortal by using stem cells as human die because of cancer or your body just die out and also can be used for creating food and aka solve world food hunger that is if the goverment wants to fund it or not

  2. stem cells:hello cell
    liver cell:who r u!GO AWAY

    one body second later
    stem cell:lets be one of them!
    fake liver cell:hi there
    *kills the fake liver cell
    body:NOO WHY

  3. For countries in which about half of the population will be over 65 years old ,
    such technology will be vital to the civilizational sustainability 💖 in terms of human resources.

  4. are this stem cells adaptive to any dna structure? i mean… for example if I get a cell from ones body and put it into mine would that cell adapt or re-encode its dna similar to my dna?

  5. They blew me away at the 2:51 minute mark " embryonic stem cells, donated from fertility clinics"…what?!😨 humans playing gods again.! It blows my mind to even think about the "POSSIBILITYS of this stem cell project. This could be the answer to immortality it seems. God help us all. ..lol

  6. What is the average price of a mesenchymal stem cell treatment for say autism or general health optimization? Which destinations are popular?

  7. Why didn't you include the very important and promising umbilical stem cells that come from a baby's umbilical cord blood and tissue? And no mention that embryonic stem cells are dangerous… They've found they are erratic and grow tumors. A simple way of putting it is they just want to become babies.

  8. To help your body rejuvenate and restore the depleted cells in your body, you'll need more stemcell. Our body has a natural way of producing stemcell in our bone marrow but as we grow old, there is an inbalance inside our body wherein it is hard to replenish our dying cells with a new one. That's when enhancing the stemcell production in our body is needed. For longevity, balance and health there are products for which stemcell production in our body is being enhanced. Visit ladylynhealth.jeunesseglobal.com for more info

  9. if pluripotent stem cells can transform to any cell in the body. would it be possible for it to transform into cancer cells as well? feeding tumors instead of helping our body to heal?

  10. This therapy does not work…I wrote to a top orthopedic doctor in Japan and asked him if the clinical trials he had performed with stem cells were passed in Japan. He said no. It would take a long time for them to pass it in Japan.

  11. I'm completely trying to exploit the success of this video, however I've released a video in collaboration with King's College London from the perspective of a stem cell which may help your understanding (or at the very least be an entertaining 3 minutes) – https://youtu.be/JXiGiRa4O_E

  12. Nice video,

    Thank you,

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  13. Nice creative approach. Please make more of like this animations,where people can understand complex phenomenons.

  14. I disagree from the start. That we need different healthcare, that depends on the ailment and that yes we need different medicine accordingly. BUT to keep the body in a healthy state that is universal

  15. I am interesting with the purpose of stem cell, surely the positive (hope to cure cancer , provide the organ after amputation) together with the negative…we will create artificial superior human being from the beginning for some purpose….and don't know how to handle it. I hope there were international law or world law to regulate that stemcell only for curing purpose not to create human from the beginning.

  16. Why is Stem Cell Support Important?

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  17. Good video, but the comparison between musical tastes, and body needs, was a very bad comparison. Completely different topics 🤦

  18. In 1989, I advised Deng Xao Peng’s government to pursue what was then “pluri-potent fetal cell research.” Recall China’s one-child policy at the time…

  19. The whole body regenerates itself, but not so well these days. They should be telling us why our bodies aren't performing as well as they could be, not what 'scientists' are doing to help. These same 'scientists' discovered GcMaf back in 1994 and it has been suppressed by all gov'ts since then. They are not performing as they should be due to nagalese which we get from vaccinations. Nagalese cripples our own GcMaf production, that's why it's in vaccines, so you keep having to visit your doctors for more 'disease management', otherwise known as being fleeced by Big Pharma.

  20. Very good video, but, this refers to only pluripotent stem cells, and not multi-potent stem cells, which are much more common than pluripotent, and don’t involve the touchy subject of fetus harvesting.

  21. class BloodCell: StemCell { }

    For real I really love the biologic side of Systems Theory, it amazes me always ♥

    Hope you have a great day!

  22. Are stem cells a complete replica as if it were the original cell there? So if a stem cell becomes a muscle cell, is it 100% a muscle cell?

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