H HiPerformance CultureThe Evidence
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Trend Breakdown
The Evidence

Does beetroot juice really make you faster?

The nitrate-nitrite-nitric oxide pathway is real, and the performance gains are measurable. But beetroot juice is not the universal ergogenic the market implies. Whether it works for you depends on a single, easily testable variable: how trained you already are.

Updated Published 9 Jun 2026 · Last reviewed 9 Jun 2026 · 5 sources
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Trend Science
Breakdown
Evidence-graded series
02What's being claimed

Beetroot juice is a legal, natural performance booster backed by published research. The nitrate it contains converts to nitric oxide in the body, improving blood flow and muscle efficiency so athletes can sustain harder efforts for longer. That is the claim, and it has genuine peer-reviewed roots.

The trend gained traction on genuinely solid ground. The 2009 Bailey et al. crossover trial in the Journal of Applied Physiology showed that dietary nitrate raises plasma nitrite and nitric oxide, directly lowering the oxygen cost of submaximal cycling 1. Professional cycling teams adopted nitrate-loading protocols around 2012, lending the claim elite credibility that filtered down through sports media. By 2015, pre-dosed beetroot shots were stocked in mainstream health-food shops, making a laboratory-validated ergogenic accessible to any club runner without a prescription or elaborate preparation.

The biological mechanism the trend describes is genuine. Dietary nitrate, concentrated in beetroot, is reduced to nitrite by oral bacteria and then converted to nitric oxide in hypoxic tissue. Nitric oxide dilates blood vessels and improves mitochondrial efficiency, cutting the oxygen cost of a given power output. Where the research has since qualified the picture is not the existence of this pathway but its magnitude across different populations 4.

Origin
Exeter Physiology Lab
Jones, Bailey et al. published the first controlled beetroot-nitrate RCT in 2009, establishing the mechanism.
→
Vector
Elite cycling teams
Professional cycling teams adopted nitrate loading protocols around 2012, widely reported in sports science media.
→
Spike
Sports nutrition market
Pre-dosed beetroot shots entered mainstream retail by 2015, driving adoption among amateur endurance athletes.
"I started taking beetroot shots before every long run after a cycling friend told me the pros swear by it. Two spoonfuls, two hours out. I genuinely felt I was breathing easier by the end of the first month."
— representative of the claim as it circulates online
03The evidence verdict
H
HiPerformance Culture The Evidence · Trend Breakdown
Verdict

Dietary nitrate genuinely cuts O2 cost in recreational athletes; elite athletes see little benefit.

Hype Evidence
This trend lands here
Low Moderate High
Moderate confidence 5 sources cited · 1 foundational RCT, 2 systematic reviews, 1 umbrella review, 1 randomised trial · 2009–2025
✓

What holds up

✓
The nitrate-nitrite-nitric oxide pathway is real: beetroot juice measurably raises plasma nitrite and nitric oxide within 2–3 hours of ingestion, improving mitochondrial efficiency and vasodilation.
Gold
✓
In recreational and moderately trained athletes, dietary nitrate supplementation reduces submaximal oxygen cost by 3–5% and significantly extends time to exhaustion.
Gold
✕

What doesn't

✕
Elite endurance athletes show little to no improvement in running economy, VO2max, or mechanical parameters; the ergogenic effect diminishes sharply with higher training status.
Silver
✕
High daily doses (500 ml+) consumed chronically can push dietary nitrate above acceptable daily intake and may stimulate formation of N-nitroso compounds.
Safety-critical Silver
✕
Concurrent use with prescribed nitrate medications (GTN, isosorbide mono/dinitrate) risks additive hypotension and is contraindicated without medical oversight.
Safety-critical Gold
04The studies
Scored on Design quality Measurement precision Causal clarity Replication value
Gold
-19% O2 cost reduction at submaximal cycling intensity
Crossover RCT · n=8
Bailey et al. Journal of Applied Physiology · 2009
Beetroot juice (~500 ml, ~6 mmol nitrate) reduced the oxygen cost of submaximal cycling by up to 19% and extended time to exhaustion at high intensity. The landmark study demonstrating that dietary nitrate enhances mitochondrial efficiency via the nitrate-nitrite-nitric oxide pathway.
doi:10.1152/japplphysiol.00722.2009 Verify ↗
Silver Randomised double-blind trial · n=12 elite runners
Balsalobre-Fernandez et al. PLoS ONE · 2018
Fifteen days of nitrate-rich beetroot juice improved time to exhaustion in elite middle and long-distance runners (VO2max ~72 ml/kg/min), but produced no meaningful improvement in running economy, VO2max, or running mechanics. Key evidence that ergogenic effects diminish at elite level.
doi:10.1371/journal.pone.0200517 Verify ↗
Contested — Small sample (n=12) and 15-day supplementation window limit statistical power to detect modest performance differences.
Silver Systematic review
Zamani et al. Critical Reviews in Food Science and Nutrition · 2021
Confirmed vasodilatory and oxygen-delivery benefits of beetroot juice. Raised safety concerns: high habitual doses can push nitrate intake above acceptable daily limits, there is potential for N-nitroso compound formation, and co-administration with prescribed nitrate drugs risks dangerous hypotension.
doi:10.1080/10408398.2020.1746629 Verify ↗
Gold Systematic review & meta-analysis · 24 studies, n=335
Wong, Sim & Burns Journal of Exercise Science & Fitness · 2022
Dietary nitrate supplementation produced a statistically significant improvement in high-intensity endurance time-trial performance (5–30 min efforts) across 24 studies and 335 participants. Effects were stronger in recreational athletes than in highly trained competitors, reinforcing the training-status moderation observed elsewhere.
doi:10.1016/j.jesf.2022.06.004 Verify ↗
Gold
20 meta-analyses synthesised across 11 performance domains
Umbrella review · 20 systematic reviews with meta-analyses
Poon et al. Sports Medicine · 2025
Synthesised 20 meta-analyses across 11 performance domains. Nitrate supplementation robustly improves time-to-exhaustion, total distance covered, and muscular endurance. Effects on time-trial and sprint performance are less consistent. Training status emerged as the primary moderator: recreationally active individuals benefit most.
doi:10.1007/s40279-025-02194-6 Verify ↗
05So what do you actually do

The evidence supports a real but narrow use case; check whether you match the profile.

Recreational and club-level athletes see real, measurable gains; highly trained individuals should test individually.

01Consume ~500 ml of beetroot juice (or 400–500 mg nitrate equivalent) two to three hours before your session.
02Target moderate to high-intensity endurance efforts of 20–80 minutes for the strongest response.
03Avoid if you take prescribed nitrate medication (GTN, isosorbide dinitrate); the blood-pressure interaction is dangerous.
04If your VO2max is above approximately 65 ml/kg/min, expect diminishing returns and test individually before committing.
06The verdict triad
Claim

Natural Ergogenic Aid

Beetroot juice contains dietary nitrate that converts to nitric oxide in the body, lowering the oxygen cost of exercise. The effect is real, published, and mechanistically explained. It is not marketing chemistry.

Consequence

Real Gains, Narrow Profile

A 3–5% reduction in oxygen cost is modest in isolation but compounds over an endurance event. Sub-elite athletes run or ride further at the same perceived effort, and the time-to-exhaustion gains shown in meta-analysis are statistically robust.

Lever

Pre-load, Check, Then Race

Pre-load with ~500 ml two to three hours before your event. Check your training status and rule out any prescribed nitrate medication. If your VO2max is above ~65 ml/kg/min, expect smaller returns.

08What to do next
What to do next

Want to know if you're in the profile that benefits from dietary nitrate?

The HPC Endurance Assessment maps your current training status and identifies which ergogenic aids the evidence actually supports for your fitness level. One short test, evidence-based guidance.

Take the assessment
09Share & references
Update log
9 Jun 2026First published · 5 sources reviewed (foundational RCT, 2 systematic reviews, umbrella review, randomised trial)
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Bibliography · every source, resolvable
01Bailey, S.J., Winyard, P., Vanhatalo, A., Blackwell, J.R., DiMenna, F.J., Wilkerson, D.P., Tarr, J., Benjamin, N. & Jones, A.M. (2009). Dietary nitrate supplementation reduces the O<sub>2</sub>cost of low-intensity exercise and enhances tolerance to high-intensity exercise in humans. Journal of Applied Physiology, 107(4), 1144-1155. doi:10.1152/japplphysiol.00722.2009 Verify ↗Gold
02Wong, T.H., Sim, A. & Burns, S.F. (2022). The effects of nitrate ingestion on high-intensity endurance time-trial performance: A systematic review and meta-analysis. Journal of Exercise Science &amp; Fitness, 20(4), 305-316. doi:10.1016/j.jesf.2022.06.004 Verify ↗Gold
03Zamani, H., de Joode, M.E.J.R., Hossein, I.J., Henckens, N.F.T., Guggeis, M.A., Berends, J.E., de Kok, T.M.C.M. & van Breda, S.G.J. (2020). The benefits and risks of beetroot juice consumption: a systematic review. Critical Reviews in Food Science and Nutrition, 61(5), 788-804. doi:10.1080/10408398.2020.1746629 Verify ↗Silver
04Poon, E.T., Iu, J.C., Sum, W.M., Wong, P., Lo, K.K., Ali, A., Burns, S.F. & Trexler, E.T. (2025). Dietary Nitrate Supplementation and Exercise Performance: An Umbrella Review of 20 Published Systematic Reviews with Meta-analyses. Sports Medicine, 55(5), 1213-1231. doi:10.1007/s40279-025-02194-6 Verify ↗Gold
05Balsalobre-Fernández, C., Romero-Moraleda, B., Cupeiro, R., Peinado, A.B., Butragueño, J. & Benito, P.J. (2018). The effects of beetroot juice supplementation on exercise economy, rating of perceived exertion and running mechanics in elite distance runners: A double-blinded, randomized study. PLOS ONE, 13(7), e0200517. doi:10.1371/journal.pone.0200517 Verify ↗Silver
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