鋅 Zinc × 注意力不足過動症
結論：證據支持但有警示
L2 證據面，2022 年劑量反應統合分析（6 RCT、489 名兒童）顯示鋅補充對 ADHD 總分有顯著但有限的改善（SMD -0.
C 🟠 C 薄弱證據 附警語發布 ⚠️ medium — moderate promotional content
L2 證據面，2022 年劑量反應統合分析（6 RCT、489 名兒童）顯示鋅補充對 ADHD 總分有顯著但有限的改善（SMD -0.62），但對「過動」與「注意力不集中」分量表均無顯著效益，且 GRADE 證據等級被評為「中度到非常低」；2013 年早期 MA 結論為「against」、觀察性研究 MA 結果中性，呈現結果不一致與小樣本問題。
NIH ODS（L5a）未針對 ADHD 提供獨立支持，主流監管（FDA/EFSA/TFDA/WHO）皆未核可 ADHD 適應症；Cleveland Clinic 明確 against、CHADD 持 cautious、Mayo/Harvard 未表態。
屬於 weak evidence、小樣本、結果不一致、需在缺乏症前提下使用，故評為 C。
⚖️
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 0.45
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
84%
證據方向一致性高
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 = 0.45
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 高品質 SR/MA 顯示 negative 主導 (2 negative > 1 positive)，下層 RCT 不能推翻
- apply_hec_override — HEC-1 高階證據 negative — 強制由 C 改為 D
- 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
The effect of zinc supplementation in children with attention deficit hyperactivity disorder: A systematic review and dose-response meta-analysis of randomized clinical trials
結論：Pooling 6 RCTs (489 school-aged children), zinc significantly reduced the ADHD TOTAL score (SMD -0.62 Hedges' g, 95% CI -1.24 to -0.002, p=0.04) but had NO significant effect on hyperactivity (SMD -0.93, 95% CI -3.31 to 1.45, p=0.44) or inattention (SMD 0.21, 95% CI -0.09 to 0.51, p=0.17); authors note small samples and low certainty.
前往 PubMed The Role of Iron and Zinc in the Treatment of ADHD among Children and Adolescents: A Systematic Review of Randomized Clinical Trials
結論：Across 9 RCTs (~693 participants; 5 assessed zinc sulfate), supplementation was associated with improvements in ADHD severity but effect sizes 'tended to be low and/or focused on specific ADHD symptoms'; authors conclude the role remains controversial, being 'most consistent with the evidence for zinc.'
前往 PubMed Double-blind, placebo-controlled study of zinc sulfate in the treatment of attention deficit hyperactivity disorder
結論：In the largest zinc-ADHD RCT (N=400; zinc 202 vs placebo 198, 12 wk), zinc was superior to placebo for hyperactivity, impulsivity and impaired socialization but NOT for attention-deficit symptoms; full therapeutic response 28.7% (zinc) vs 20% (placebo).
前往 PubMed Zinc status in attention-deficit/hyperactivity disorder: a systematic review and meta-analysis of observational studies
結論：Across 22 observational studies (1280 ADHD cases, 1200 controls), serum/plasma zinc did NOT differ overall (WMD -1.26 umol/L, 95% CI -3.72 to 1.20); only after excluding one outlier did ADHD show lower zinc (WMD -2.49 umol/L, 95% CI -4.29 to -0.69); hair zinc not significant (WMD -24.19, 95% CI -61.80 to 13.42).
前往 PubMed Zinc for treating of children and adolescents with attention-deficit hyperactivity disorder: a systematic review of randomized controlled clinical trials
結論：Reviewing 3 RCTs, the authors found insufficient evidence; the single well-controlled trial randomized by baseline zinc level showed zinc 'either alone or in combination with stimulants, did not improve ADHD', concluding more studies are needed to prove or disprove an effect.
前往 PubMed L4a US FDA
中性
— 本適應症無對應資料
L4b EU EFSA
支持
contributes to normal function of the immune system 來源↗
L4c UK NHS
謹慎
You should be able to get all the zinc you need from your daily diet 來源↗
L4d TW TFDA / 衛福部
支持
鋅之每日最高攝食量不得超過30 mg 來源↗
L4e WHO
支持
zinc has been recommended by WHO and UNICEF as the only treatment to be coupled with oral rehydration salts for the treatment of all diarrhoea episodes 來源↗
L5a NIH Office of Dietary Supplements
支持
Zinc is an essential mineral involved in numerous aspects of cellular metabolism 來源↗
L5b Mayo Clinic
中性
— 本適應症無對應資料
L5c Cleveland Clinic
反對
Vitamins and minerals claiming to treat ADHD have no scientific backing. In fact, they may interact with prescription medication. 來源↗
L5d Harvard Health
中性
— 本適應症無對應資料
L5e Specialty Society (condition-mapped)
謹慎
The thing with those elements is they shouldn't be taken in large doses or by people who don't have a deficiency. That could lead to other health problems. One should treat a deficiency but not depend on these substances to correct ADHD. 來源↗
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 中度
低中高
📍立場總覽
台灣社群對「鋅補 ADHD」普遍持「輔助、不是主角」的中性偏支持立場，多數家長把鋅當成搭配 omega-3、維生素 B 群的整體飲食調整方案，而非取代利他能/專思達等藥物。PTT BabyMother、Dcard 親子板與 Mobile01 多建議先抽血檢驗再決定是否補充。
💬社群實感
意見分歧
破解迷思 社群最常見的 5 個誤解
✓
事實以為吃鋅就能取代利他能/專思達等 ADHD 藥物
✓
事實把『鋅缺乏會導致過動』當成因果關係（其實只有相關性）
✓
事實認為劑量越高越有效，自行買到 50mg 以上每天吃
✓
事實把成人男性壯陽用的高劑量螯合鋅直接給小孩吃
✓
事實誤以為所有 ADHD 孩子都缺鋅，不檢驗就補
🩹 社群通報的副作用
- 空腹服用反胃、噁心
- 長期高劑量造成銅缺乏、貧血
- 與抗生素或鈣片同時吃影響吸收
- 口中金屬味
- 兒童短期食慾下降
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查看 ClaimReview 結構化資料 (JSON-LD)
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