A Systematic Review of the Effect of Dietary Supplements on Cognitive Performance in Healthy Young Adults and Military Personnel

This systematic review examined the cognitive effects of dietary supplements on healthy young adults, particularly in military contexts. Tyrosine and caffeine showed the most promise, enhancing attention, vigilance, and memory under stress or sleep deprivation. Omega-3 and flavonoids demonstrated limited but potential benefits for executive function and memory, respectively. The review emphasized methodological weaknesses in many studies and highlighted the need for more robust research to confirm the efficacy of these supplements for cognitive enhancement.

For improved focus and cognitive resilience, consider using caffeine in moderation or consuming tyrosine-rich foods (like eggs, cheese, and soy). These are particularly effective under stress or fatigue. Avoid overreliance on supplements until more conclusive research is available, and consult professionals before starting any regimen.