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TLDR: Scientists discovered that human fat extracted by liposuction contains adult stem cells. Those could be used to repair heart and damaged joints, but since these particular doctors are cardiologists, they want to repair hearts. It is still not ready for general usage and needs more testing and experimenting.

You should not try to get fat to create a reserve of stem cells.

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This seems like an obvious conclusion; our bodies are full of stem cells but that doesn't mean they're used for repair. What I would expect them to prove is that the body is actually using fat stem cells for repair of other organs.

I didn't read the whole article (long, information sparse), so I don't know if they came to this conclusion.

They are currently focused on extracting stem cells from the fat and using those to repair tissue by injecting the extracted cells directly to the heart.

There are complications, because safe way to do it is not very precise and stem cells would not attach to the heart. Trying it multiple times would increase chances of infection, which is not good for recovering heart, etc.

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