topicDha Cognition Meta-Analysis
claimConcurrently, the number of individuals affected by dementia is anticipated to nearly triple by 2050, with associated treatment costs projected to reach US$2.8 trillion by 2030 [].
evidence level1
citationLiu Xing (2026)
sourceNutritional supplements and cognition in healthy aging and mild cognitive impairment patients: a systematic review and network meta-analysis
topicDha Cognition Meta-Analysis
claimIn addition, omega-3 fatty acids support synaptic plasticity and exert anti-inflammatory effects; however, evidence is mixed, as randomized trials in healthy older adults show limited benefits [,], while several analyses report modest improvements in aged or MCI patients [,].
evidence level1
citationLiu Xing (2026)
sourceNutritional supplements and cognition in healthy aging and mild cognitive impairment patients: a systematic review and network meta-analysis
topicDha Cognition Meta-Analysis
claimObservational studies and recent trials involving antioxidant nutrients, such as pomegranate juice and resveratrol, alongside polyphenols, suggest potential protection for specific cognitive domains (e.g., memory) and reduced dementia risk, although effects are heterogeneous and causality remains unconfirmed [,].
evidence level1
citationLiu Xing (2026)
sourceNutritional supplements and cognition in healthy aging and mild cognitive impairment patients: a systematic review and network meta-analysis
topicDha Cognition Meta-Analysis
claim1 2 3 4 5 6 7 8 9 10 The World Health Organization (WHO) projects that by 2050, the global population aged 60 and above will reach 2.1 billion, highlighting the inevitability of global aging [].
evidence level1
citationLiu Xing (2026)
sourceNutritional supplements and cognition in healthy aging and mild cognitive impairment patients: a systematic review and network meta-analysis
topicDha Cognition Meta-Analysis
claimDespite its biological relevance, global evidence indicates substantial variability in DHA intake and status, largely influenced by dietary patterns, food availability, and socioeconomic conditions.
evidence level4
citationValle-Valdez B (2026)
sourceDocosahexaenoic acid intake and health in adults and older adults: a narrative review of disparities by country income level.
topicDha Cognition Meta-Analysis
claimPopulations in high-income countries (HICs) generally reported higher DHA intake and tissue concentrations, mainly due to regular fish consumption and greater access to supplementation, while evidence from middle-income countries (MICs) was scarce, heterogeneous, and based on small non-representative samples.
evidence level4
citationValle-Valdez B (2026)
sourceDocosahexaenoic acid intake and health in adults and older adults: a narrative review of disparities by country income level.
topicDha Cognition Meta-Analysis
claimIn HICs, even moderate fish intake significantly improved DHA status, whereas in MICs, mean intakes frequently fell below 200 mg/day, a threshold commonly associated with cardiometabolic and neurocognitive benefits.
evidence level4
citationValle-Valdez B (2026)
sourceDocosahexaenoic acid intake and health in adults and older adults: a narrative review of disparities by country income level.
topicDha Cognition Meta-Analysis
claimDocosahexaenoic acid (DHA) is a long-chain omega-3 polyunsaturated fatty acid essential for maintaining optimal brain and cardiometabolic health across adulthood and aging.
evidence level4
citationValle-Valdez B (2026)
sourceDocosahexaenoic acid intake and health in adults and older adults: a narrative review of disparities by country income level.