The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
the blood of young rodents, mice and rats, when transfused into old, demented rodents, mice and rats, made those old, demented rodents recover much of their memory and seem much more vital and energetic, better recall of different spatial learning tasks.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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So we saw that uh there's stem cells in the brain of these mice that they got reactivated. There was less inflammation, more activity um that we can measure in the brain with um electrical activity of neurons. And then most importantly, we actually saw that their memory function improved.
Transplanting blood cells from young mice into old mice prevented cognitive decline by halting the activation of a type of immune cell in the brain called microglia.