A recent study from Sweden found that older adults who atemore meat had slower cognitive decline and a lower risk of dementia, but onlyif they carried a specific genetic risk factor for Alzheimer’s disease (APOEE3/E4 or E4/E4).
The study included 2,157 adults aged 60 or older withoutdementia who were followed for up to 15 years.
This was an observational study, so it does not show thatmeat prevents dementia. It does suggest that diet and brain health may interactwith genetics.
One important finding from this study is that all participantshad a higher risk of dementia if they had a higher intake of processed meat,such as bacon and deli meats.
Another interesting detail is what the meat replaced in thediet. The association was strongest when meat replaced foods like cereals anddairy, not when it replaced fish or eggs.
From a headache and migraine perspective, there may beanother explanation worth considering. Diets higher in meat are often lower incarbohydrates, which can shift metabolism toward using ketones for energy.Ketogenic strategies are helpful for some patients with migraine and supportbrain energy metabolism. A rare form of childhood epilepsy respondsdramatically to a ketogenic diet.
It is possible that some of the observed benefits relate tothis metabolic effect rather than meat itself. This is especially relevant inAPOE4 carriers, in whom differences in brain energy use have been reported.
The study also noted that some of the benefits could be dueto higher levels of vitamin B12 in meat, but these findings remain preliminary.
For now, this research does not change standardrecommendations. The most consistent evidence still supports diets built aroundwhole, minimally processed foods, with limited processed meat.
This study adds support for a more individualized view ofnutrition, in which genetics and metabolism may influence how the brainresponds to diet.
