this post was submitted on 27 Jan 2026
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Right so Alzheimer's results in the death of neurons.
Humans cannot regrow neurons. Most animals cannot.
The few exceptions are in one small area of the brains limbic system.
Again. Not supported to happen in humans. But some theories say it might.
Even so. There is no drug that can restore neurons lost.
No drug that can restore the connections between neurons that are lost.
There already were drugs discovered 20 years ago that cure rats of AD related plaques and tau proteins. Doesn't work in humans . Probably because those rats are genetically engineered to produce plaques and tau proteins.
Not the same as a human disease model.
That's false. Neurogenesis continues well into adulthood. https://www.health.harvard.edu/mind-and-mood/the-book-of-neurogenesis
Just to point out. This article theorizes neurogenesis in the hippocampus MAY be possible in humans because it's been supported to occur in rats.
This is exactly what I said. It's theorized to occur in humans in a very specific area of the hippocampus (not in cortical regions or any other area of the brain,). It's not supported with evidence to occur. It's only theorized to occur.
This article is more specifically talking about the research on exercise and hippocampus neurogenesis in rats. Which showed a positive correlation.