>Cognitive Effects and Clinical Outcomes
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>Multiple systematic reviews and clinical trials report that ketogenic diets (KD) or ketone supplementation can lead to improvements in cognitive function, daily living activities, and quality of life in people with mild-to-moderate Alzheimer's disease 413141819. Chronic KD interventions (3–4 months) have been associated with increased cognitive test scores and improved memory performance 1418. Some studies also show positive changes in Alzheimer's biomarkers, such as reduced tau and increased amyloid-beta 42 in cerebrospinal fluid 7."
Well, thanks. That's certainly better than what made it into wikipedia. But honestly: no? Only 41% of papers answering "yes" to an engaging and evocative hypothesis, in the era of the replication crisis, and especially after a decade and a half of the hypothesis sitting around in general lore, generally means "no, duh" in my experience.
As the site itself says, "evidence is still limited and more research is needed", which is definitely not "compelling". My money still sits on "nerd wish fulfillment". But we'll see.
Yeah, there are studies suggesting neurons, far more so than many peripheral cells, are especially vulnerable to insulin resistance. So by the time you see systemic insulin resistance by standard measures, the brain may already be slipping. I suppose this is why ketonic diet has any role in restoring cognitive function.
>Cognitive Effects and Clinical Outcomes > >Multiple systematic reviews and clinical trials report that ketogenic diets (KD) or ketone supplementation can lead to improvements in cognitive function, daily living activities, and quality of life in people with mild-to-moderate Alzheimer's disease 413141819. Chronic KD interventions (3–4 months) have been associated with increased cognitive test scores and improved memory performance 1418. Some studies also show positive changes in Alzheimer's biomarkers, such as reduced tau and increased amyloid-beta 42 in cerebrospinal fluid 7."