What do systematic reviews say?

Vitamin E (capsules 2000 IU/day in two divided doses) vs placebo

Vitamin E (capsules 2000 IU/day in two divided doses) showed no clear difference in adverse events Number of participants reporting ≥ 1 serious adverse… compared with placebo (moderate certainty).

• Vitamin E for Alzheimer's dementia and mild cognitive impairment 2017 · Cochrane Headline outcomes only
  RR 0.86 [0.71, 1.05]
  1 study · 304 participants
  Moderate

Vitamin E (capsules 2000 IU/day in two divided doses) vs placebo

• Vitamin E for Alzheimer's dementia and mild cognitive impairment 2017 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 516 participants
  GRADE not reported

Intervention not reported

The review found no eligible studies for this question.

• Computerised cognitive training for 12 or more weeks for maintaining cognitive function in cognitively healthy people… 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Intervention not reported

The review found no eligible studies for this question.

• Computerised cognitive training for 12 or more weeks for maintaining cognitive function in cognitively healthy people… 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found