other · for poor memory
Beetroot (Dietary Nitrate)
Meant to work through more blood flow to the brain, though that was not measured directly.
Say that in clinical terms
Proposed to work via nitric-oxide-mediated increases in cerebral blood flow, though direct evidence for this pathway improving memory in humans is thin.
How strong is the research?
No Benefit evidence
13 weeks of beetroot juice, at three doses, changed neither thinking nor blood flow to the brain.
Low-quality evidence
2 papers read, 1 against.
Tested as: acute trial: chewable tablets with 45-82.5 mg nitrate PLUS 200 mg vitamin C and 100 mg betaine (not nitrate alone); chronic trial: pure beetroot juice, 70-140 mL/day (up to ~2x70 mL) for 13 weeks in older adults
How much to take
45–140 mg