topicBeetroot Juice Cognition Randomized Trial
claimDynamic cerebral autoregulation (dCA) is an important mechanism of cerebrovascular blood flow regulation and serves as a protective mechanism for the brain against large fluctuations in blood pressure that can result in hyper‐ and hypo‐perfusion of vulnerable brain regions (Claassen et al., ).
evidence level2
citationGosalia Jigar (2026)
sourceA pilot randomized controlled trial of the effects of dietary nitrate supplementation on dynamic cerebral autoregulation in older adults with metabolic syndrome
topicBeetroot Juice Cognition Randomized Trial
claimImpaired dCA may be a primary mechanism contributing to increased risk of cognitive decline in MetS and can be targeted therapeutically.
evidence level2
citationGosalia Jigar (2026)
sourceA pilot randomized controlled trial of the effects of dietary nitrate supplementation on dynamic cerebral autoregulation in older adults with metabolic syndrome
topicBeetroot Juice Cognition Randomized Trial
claimReduced NO bioavailability promotes inflammation, oxidative stress, and endothelial dysfunction, all of which negatively impact cerebral microvascular function and subsequent dCA (Deanfield et al., ; Delgado Spicuzza et al., ; Mcnally et al., ; Picón‐pagès et al., ; Seals et al., ; Stephan et al., ).
evidence level2
citationGosalia Jigar (2026)
sourceA pilot randomized controlled trial of the effects of dietary nitrate supplementation on dynamic cerebral autoregulation in older adults with metabolic syndrome
topicBeetroot Juice Cognition Randomized Trial
claim2021 2009 2024 2024 Individuals with metabolic syndrome (MetS) demonstrate worse cognitive functioning, specifically in cognitive domains regulated by frontal regions such as executive functioning (Marseglia et al., ; Segura et al., ), and dementia (Beeri & Gu, ; Qureshi et al., ).
evidence level2
citationGosalia Jigar (2026)
sourceA pilot randomized controlled trial of the effects of dietary nitrate supplementation on dynamic cerebral autoregulation in older adults with metabolic syndrome
topicBeetroot Juice Cognition Randomized Trial
claimCardiovascular adaptations appear more coherent, with acute reductions in systolic blood pressure and improved endothelial function complemented in some cases by microvascular enhancements during multi-week supplementation.
evidence level4
citationLee E (2026)
sourceBeetroot Juice and Exercise for Clinical Health and Athletic Performance: A Narrative Review.
topicBeetroot Juice Cognition Randomized Trial
claimOverall, available evidence supports a role for NO-mediated vascular and metabolic pathways in the physiological effects of BRJ, although marked inter-individual variability highlights the need for responder-focused dosing strategies and further mechanistic investigation integrating metabolic, microbial, and performance-related outcomes.
evidence level4
citationLee E (2026)
sourceBeetroot Juice and Exercise for Clinical Health and Athletic Performance: A Narrative Review.
topicBeetroot Juice Cognition Randomized Trial
claimBeetroot juice (BRJ), a concentrated dietary source of nitrate alongside betalains and polyphenols, influences physiology through enhanced nitrate-nitrite-NO bioavailability, antioxidant activity, and interactions with oral and gut nitrate-reducing microbiota.
evidence level4
citationLee E (2026)
sourceBeetroot Juice and Exercise for Clinical Health and Athletic Performance: A Narrative Review.
topicBeetroot Juice Cognition Randomized Trial
claimThe efficiency of these mechanisms depends on dose, timing, and preservation of oral bacteria, with antibacterial mouthwash or thiocyanate-rich foods potentially blunting NO 2 - generation.
evidence level4
citationLee E (2026)
sourceBeetroot Juice and Exercise for Clinical Health and Athletic Performance: A Narrative Review.