Examine Database: Executive Function
| Intervention | Grade | Effect | Detail |
|---|---|---|---|
| Cognitive Stimulation Therapy | B | ||
| Curcumin | D | ||
| Theanine | B | ||
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| Creatine | |||
| Ashwagandha | |||
| Kanna | |||
| Caffeine | |||
| Prenatal Vitamins | |||
Research FeedRead all studies
Can fermented soy improve cognition?
In this 12-week randomized controlled trial in 47 older adults without signs of cognitive impairment, taking a fermented soy supplement had no meaningful effect on cognition.
Adherence to the EAT-Lancet diet and cognition in older adults
Digital game-based interventions might improve cognitive functioning in children and adolescents with autism
Combined cognitive and motor training may improve some measures of stroke recovery
Can vitamin D improve cognitive function in adults with early cognitive impairment?
Examine Database References
- Theanine - Shinsuke Hidese, Shintaro Ogawa, Miho Ota, Ikki Ishida, Zenta Yasukawa, Makoto Ozeki, Hiroshi KunugiEffects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled TrialNutrients.(2019 Oct 3)
- Theanine - Shinsuke Hidese, Miho Ota, Chisato Wakabayashi, Takamasa Noda, Hayato Ozawa, Tsutomu Okubo, Hiroshi KunugiEffects of chronic l-theanine administration in patients with major depressive disorder: an open-label studyActa Neuropsychiatr.(2017 Apr)
- Ashwagandha - Chengappa KN, Bowie CR, Schlicht PJ, Fleet D, Brar JS, Jindal RRandomized placebo-controlled adjunctive study of an extract of withania somnifera for cognitive dysfunction in bipolar disorderJ Clin Psychiatry.(2013 Nov)
- Ashwagandha - Pingali U, Pilli R, Fatima NEffect of standardized aqueous extract of Withania somnifera on tests of cognitive and psychomotor performance in healthy human participantsPharmacognosy Res.(2014 Jan)
- Theanine - Grace E Giles, Caroline R Mahoney, Tad T Brunyé, Holly A Taylor, Robin B KanarekCaffeine and theanine exert opposite effects on attention under emotional arousalCan J Physiol Pharmacol.(2017 Jan)
- Ashwagandha - Choudhary D, Bhattacharyya S, Bose SEfficacy and Safety of Ashwagandha (Withania somnifera (L.) Dunal) Root Extract in Improving Memory and Cognitive FunctionsJ Diet Suppl.(2017 Nov 2)
- Kanna - Chiu S, Gericke N, Farina-Woodbury M, Badmaev V, Raheb H, Terpstra K, Antongiorgi J, Bureau Y, Cernovsky Z, Hou J, Sanchez V, Williams M, Copen J, Husni M, Goble LProof-of-Concept Randomized Controlled Study of Cognition Effects of the Proprietary Extract Sceletium tortuosum (Zembrin) Targeting Phosphodiesterase-4 in Cognitively Healthy Subjects: Implications for Alzheimer's DementiaEvid Based Complement Alternat Med.(2014)
- Theanine - Yoshitake Baba, Shun Inagaki, Sae Nakagawa, Toshiyuki Kaneko, Makoto Kobayashi, Takanobu TakiharaEffects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled StudyJ Med Food.(2021 Apr)
- Caffeine - Irwin C, Khalesi S, Desbrow B, McCartney DEffects of acute caffeine consumption following sleep loss on cognitive, physical, occupational and driving performance: A systematic review and meta-analysis.Neurosci Biobehav Rev.(2020-Jan)
- Prenatal Vitamins - Keats EC, Oh C, Chau T, Khalifa DS, Imdad A, Bhutta ZAEffects of vitamin and mineral supplementation during pregnancy on maternal, birth, child health and development outcomes in low- and middle-income countries: A systematic review.Campbell Syst Rev.(2021-Jun)
- Creatine - Xu C, Bi S, Zhang W, Luo LThe effects of creatine supplementation on cognitive function in adults: a systematic review and meta-analysis.Front Nutr.(2024)
- Curcumin - Yu L, Li N, Li B, Ye KX, Guo J, Shan J, Cao L, Song M, Wang Y, Lee TS, Maier AB, Feng LTargeting cognitive aging with curcumin supplementation: A systematic review and meta-analysis.J Prev Alzheimers Dis.(2025 Jun 26)
- Cognitive Stimulation Therapy - Mou C, Jiang YEffect of dual task-based training on motor and cognitive function in stroke patients: a systematic review and meta-analysis of randomized controlled trails.BMC Neurol.(2025 Jul 14)