> vitamin D effects were significantly greater in females versus males and in normal cognition versus mild cognitive impairment.
> vitamin D effects were significantly greater in apolipoprotein E ε4 non-carriers versus carriers.
Translation: If you’re already cognitively impaired, vitamin D can do little to fix that. Same goes for if you’re at high risk for Alzheimer’s genetically (ApoEε4), or generally at higher risk for neurovascular diseases (male).
However, as I’m sure others in the comments will point out — supplementing vitamin D will at least ensure you’re not getting cognitive impairment due to vitamin D deficiency, which seems to absolutely be a thing.
> vitamin D effects were significantly greater in females versus males and in normal cognition versus mild cognitive impairment.
> vitamin D effects were significantly greater in apolipoprotein E ε4 non-carriers versus carriers.
Translation: If you’re already cognitively impaired, vitamin D can do little to fix that. Same goes for if you’re at high risk for Alzheimer’s genetically (ApoEε4), or generally at higher risk for neurovascular diseases (male).
However, as I’m sure others in the comments will point out — supplementing vitamin D will at least ensure you’re not getting cognitive impairment due to vitamin D deficiency, which seems to absolutely be a thing.