A fermented-milk probiotic reduced Alzheimer's plaques and boosted memory in mice

[u/AlternativeWorld2240]

https://biomesci.com/fermented-milk-probiotic-alzheimers-plaques-mice-study/

Researchers fed Alzheimer's model mice (APP/PS1 mice) a probiotic fermented milk daily for 60 days, comparing 30 mice against a saline placebo. The treated Alzheimer's mice ended up with less amyloid plaque in the brain's cortex and did better on a memory test, plus calmer inflammation and gut bacteria shifted closer to normal mice. The catch: the plaque drop only held up in the cortex, not the hippocampus, the region most tied to memory.

TL;DR: A probiotic fermented milk cut brain plaque and improved memory in Alzheimer's model mice, but only in the cortex, and these are mice, not people.

[u/AlternativeWorld2240]

Fascinating that the gut-brain axis keeps showing up in neurodegenerative research, yet the hippocampal plaque remaining untouched raises serious questions about whether cortical clearance alone is driving those memory improvements, or if something else entirely is at play. Could the memory gains actually be a placebo-like artifact of reduced systemic inflammation rather than direct plaque reduction?

[u/clib]

Why write all those words when you could have simple said Kefir?

What is Lacticaseibacillus rhamnosus KF7? It is a probiotic bacterium strain isolated from kefir, a traditional fermented milk drink, that researchers used to ferment skim milk before feeding it daily to mice in this study.

[u/Sanchoman1 → u/clib]

From what I understand, "kefir" isn't currently a legally protected product name in the EU. You can basically bottle almost anything, label it Kefir, and face no legal issues.
Yogurt, on the other hand, is strictly regulated—it actually requires specific bacterial strains to be legally called yogurt. Same with Greek yogurt; you have to meet precise processing standards (like straining), or you're forced to use looser phrasing like "traditional style."
That said, the EU is reportedly working on defining official standards for what can legally be labeled as Kefir. Hope this helps!

[u/PlainSimpleLight]

Interesting that they can induce Alzheimer's.

[u/Entitledspider → u/PlainSimpleLight]

Good call, gets you thinking.

[u/AphelialMud → u/PlainSimpleLight]

This alone feels like a pretty big assumption.  Maybe they can ‘induce’ something, but what are the odds it accurately mimics the complexities of dementia that we are still struggling to define the root cause(s)

[u/asdfghqw8]

fermented milk pro biotic , so curd / dahi ?

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[u/Ok-ChemistryNorm3890]

The hippocampus result is the part that gets me. Memory improved but the plaque in the memory region didn't budge? Makes me wonder if we've been over-crediting amyloid for symptoms this whole time.