hintl / Brain & focus
Brain & focus, by the evidence
Supplements and habits for memory, focus and cognition, each scored by the strength of the published research behind it — study counts, participant totals, and the direction of the evidence, not marketing claims.
10items
supplements & habits
29studies
reviewed
16,583participants
across those studies
hintl editorial team / Brain & Focus Desk
Brain & focus genre desk — research review
For Brain & focus, the studies with the strongest track record so far are bacopa monnieri (78/100, 4 studies), caffeine and L-theanine (78/100, 4 studies), and ginkgo biloba (78/100, 4 studies) (hintl Evidence Score, as of September 2026).
Evidence for coffee and lions mane is still limited.
Same topic, very different evidence
Even within one topic, how strongly the research backs each option varies widely. Here's what the numbers show.
Ranked by strength of evidence
Tap any item to see the studies behind its score.
78/100
Confidence: high
bacopa monnieri
memory4 studies566 participants
78/100
Confidence: high
caffeine and L-theanine
attention and focus4 studies71 participants
78/100
Confidence: moderate
ginkgo biloba
cognitive performance4 studies14,003 participants
59/100
Confidence: moderate
exercise cognition
cognitive performance2 studies89 participants· 1 more outcome
51/100
Confidence: moderate
omega-3 fatty acids
memory3 studies1,525 participants
50/100
Confidence: moderate
creatine
cognitive performance5 studies154 participants
42/100
Confidence: low
lutein
cognitive performance1 studyparticipant count not recorded
39/100
Confidence: low
coffee
cognitive performance1 study18 participants
39/100
Confidence: low
lions mane
cognitive performance1 study41 participants
39/100
Confidence: low
medium chain triglycerides
cognitive performance1 study20 participants
Evidence Scores are computed mechanically from the published research (PubMed / Semantic Scholar / OpenAlex): study design, participant numbers, and consistency across studies. An LLM is used only to extract study data, never to decide a score.
This is research-based information, not medical advice, and not a diagnosis. Consult a qualified professional about your own situation.