[ELI5] Why aren’t brain transplants possible?

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If there is a brain dead patient and a person with multiple failing organs, why is it not possible to transfer the brain to from patient to patient? I understand there are many ethical reasons to give somebody another’s body, but if both had given consent then would it be possible and if not why?

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9 Answers

Anonymous 0 Comments

The brain is connected to the rest of the body via a bunch of nerves. Each one of these nerves goes to a specific part of your body. It’s also not the same for everybody.

So imagine you have a big data cable with 1000 wires inside of it. You cut it and try to connect it to a different cable with 1100 wires. None of these wires are labeled or color coded. None of them lead to the same place. Trying to get them to match up and make it work is basically impossible.

If we had the ability to do this, we would first use it to help people who have accidents or birth defects where they end up paralyzed. Those damaged or severed connectors in their body we aren’t able to reconnect, let alone an entire nervous system

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