{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T20:23:51Z","timestamp":1792268631829,"version":"4.4.0"},"reference-count":118,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2020,2,20]],"date-time":"2020-02-20T00:00:00Z","timestamp":1582156800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Intake of dietary supplements has increased, despite evidence that some of these have adverse side effects and uncertainty about their effectiveness. This systematic review examined the evidence for the cognitive benefits of a wide range of dietary supplements in healthy young adult samples; the aim was to identify if any might be useful for optimising cognitive performance during deployment in military personnel. Searches were conducted in 9 databases and 13 grey literature repositories for relevant studies published between January 2000 and June 2017. Eligible studies recruited healthy young adults (18\u201335 years), administered a legal dietary supplement, included a comparison control group, and assessed cognitive outcome(s). Thirty-seven of 394 identified studies met inclusion criteria and were included for synthesis. Most research was deemed of low quality (72.97%; SIGN50 guidelines), highlighting the need for sound empirical research in this area. Nonetheless, we suggest that tyrosine or caffeine could be used in healthy young adults in a military context to enhance cognitive performance when personnel are sleep-deprived. Caffeine also has the potential benefit of improving vigilance and attention during sustained operations offering little opportunity for sleep. Inconsistent findings and methodological limitations preclude firm recommendations about the use of other specific dietary supplements.<\/jats:p>","DOI":"10.3390\/nu12020545","type":"journal-article","created":{"date-parts":[[2020,2,21]],"date-time":"2020-02-21T08:59:47Z","timestamp":1582275587000},"page":"545","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":39,"title":["A Systematic Review of the Effect of Dietary Supplements on Cognitive Performance in Healthy Young Adults and Military Personnel"],"prefix":"10.3390","volume":"12","author":[{"given":"Diane E.","family":"Pomeroy","sequence":"first","affiliation":[{"name":"Cognition and Behaviour, Land Division (Edinburgh), Defence Science &amp; Technology, Department of Defence, Edinburgh, South Australia 5111, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katie L.","family":"Tooley","sequence":"additional","affiliation":[{"name":"Cognition and Behaviour, Land Division (Edinburgh), Defence Science &amp; Technology, Department of Defence, Edinburgh, South Australia 5111, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bianka","family":"Probert","sequence":"additional","affiliation":[{"name":"Food and Nutrition, Land Division (Scottsdale), Defence Science &amp; Technology, Department of Defence, Scottsdale, Tasmania 7260, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandra","family":"Wilson","sequence":"additional","affiliation":[{"name":"School of Psychology, Flinders University, Bedford Park, South Australia 5042, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0161-2960","authenticated-orcid":false,"given":"Eva","family":"Kemps","sequence":"additional","affiliation":[{"name":"School of Psychology, Flinders University, Bedford Park, South Australia 5042, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,2,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"439","DOI":"10.1136\/bjsports-2018-099027","article-title":"IOC consensus statement: dietary supplements and the high-performance athlete","volume":"52","author":"Maughan","year":"2018","journal-title":"Br. 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