甜菜根 / 紅菜頭 / 甜菜汁 Beetroot / Beet juice × 認知功能
結論：證據支持但有警示
甜菜根對認知功能的人體證據薄弱且不一致，僅能給 C 級。
C 🟠 C 薄弱證據 附警語發布 🚨 high — heavy affiliate marketing in TW community
甜菜根對認知功能的人體證據薄弱且不一致，僅能給 C 級。
唯一具足夠檢力的持續給藥 RCT（PMID 35268027，13 週劑量遞增，政府資助）對認知功能與腦血流均為陰性；正面訊號全部為急性、業界資助（RedNite®）或與熱量限制混淆所致。
2025 年系統性回顧（104 篇）結論為「認知證據不確定」，Examine 甜菜根專章無認知條目（Nitrate 條目僅有 D 級無效的認知衰退結果）。
考量最嚴謹試驗為陰性，本級評定偏向 C 的下緣。
⚖️
評分透明度
所有分數由 7 層證據引擎計算，過程公開可查原始分數 0.46
D
C
B
A
S
← 反證據 / 無效有效 / 強證據 →
最終評級
C · 附警語發布
信心度
69%
證據方向大致一致
證據層級
E3
單篇高品質統合分析
▸查看完整決策路徑（audit trail）
- compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.458
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 高品質 SR/MA 顯示 positive (1 篇 > 0 negative)
- tier_strict_requirement_check — Tier 條件達標，未降階
- detect_disputes — 偵測到 0 個 hard + 0 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status
Beetroot Juice Supplementation as a Healthy Aging Strategy Through Improving Physical Performa
結論：Evidence for cognitive benefit is limited and inconsistent; only one trial showed positive Stroop-test effect; current evidence on cognitive improvement remains inconclusive.
前往 PubMed
Incremental Doses of Nitrate-Rich Beetroot Juice Do Not Modify Cognitive Function and Cerebral
結論：Cognitive function and cerebral blood flow were not affected by any dose of nitrate-rich beetroot juice at 13 weeks (p > 0.05 for all outcomes).
前往 PubMed
Acute effects of a chewable beetroot-based supplement on cognitive performance: a double-blind r
結論：Immediate recall improved by 20.69% (p < 0.05) and delayed recall by 12.34% (p < 0.05); no significant effect on working memory or processing speed.
前往 PubMed
Caloric Restriction (CR) Plus High-Nitrate Beetroot Juice Does Not Amplify CR-Induced Metabolic
結論：Combined CR + beetroot juice produced greater improvement in TMT-B scores (p = 0.012) vs CR alone; confounded by concurrent caloric restriction.
前往 PubMed
A Randomized, Crossover Study of the Acute Cognitive and Cerebral Blood Flow Effects of Phenoli
結論：Robust mood and CBF effects seen for apple and coffee-berry beverages; beetroot-only nitrate signal was not isolated; mixed multi-ingredient findings.
前往 PubMed
L4a US FDA
中性
Permanently listed, exempt from certification. CFR Reference: 21 CFR 73.260. Permitted Uses: Foods generally. 來源↗
L4b EU EFSA
謹慎
L4c UK NHS
謹慎
you've recently eaten beetroot – this can turn your pee pink 來源↗
L4d TW TFDA / 衛福部
中性
甜菜根屬於根莖類蔬菜，學名 Beta vulgaris，在台灣食藥署食品營養成份資料庫（TFND）中以「根菾菜根」收錄，歸類為蔬菜類食品。甜菜紅（Beet Red）為「天然食用色素衛生標準」核可之天然著色劑之一，由甜菜（Beta vulgaris）之根莖取得，主成分為甜菜苷（Betanin），屬台灣食藥署核准之46種天然食用色素來源之一。 來源↗
L4e WHO
未表態
ADI 0–3.7 mg/kg bw, expressed as nitrate ion (equivalent to 0–5 mg/kg bw as sodium nitrate). The ADI does not apply to infants below the age of 3 months. 來源↗
L5a NIH Office of Dietary Supplements
謹慎
L5b Mayo Clinic
謹慎
Beets are rich in nitrates, a natural compound that can dilate blood vessels, allowing more oxygenated blood to reach the brain. 來源↗
L5c Cleveland Clinic
中性
L5d Harvard Health
未表態
— 本適應症無對應資料
L5e Specialty Society (condition-mapped)
謹慎
PTT · Dcard · Mobile01 彙整自公開論壇討論，非統計抽樣，僅反映社群風向。
廣告 / 業配密度 極高
低中高
📍立場總覽
台灣社群（PTT/Dcard/Mobile01/FB社團/痞客邦）幾乎沒有針對『甜菜根用於認知功能』的真實使用討論。唯一在 PTT 提及甜菜根與腦部的貼文（love-vegetal 板）是轉貼的新聞稿（Fw:[新聞]），非鄉民親身經驗，且唯一回應是對跨板洗文的質疑，無任何認知有感心得。甜菜根的『護腦/防失智/增加腦部血流』論述幾乎全集中在商業健康媒體（ETtoday健康雲、大紀元、安達人壽、德風、primeplus、馬可健康購等保健品業配/部落格），正是 L10c 設計上要排除的 L10d 污染來源。真正的草根討論集中在『運動續航力』（甜菜根汁列為運動增補劑、賽前補給），而非認知功能。針對本 condition 屬於社群冷門、討論稀缺，依規範回傳空結果，未杜撰鄉民討論。
💬社群實感
無共識（社群幾乎無針對認知功能的甜菜根真實使用心得；零星相關內容均為轉貼新聞或商業媒體業配，非親身經驗）
- 規律身體活動
- 高血壓的妥善控制
- 戒菸
查看 ClaimReview 結構化資料 (JSON-LD)
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