鉻（三價鉻） Chromium × 減重
結論：主流反證據
三項關鍵 meta-analysis（Onakpoya 2013 n=622、Pittler 2003 n=489、Tian 2013 n=392）均顯示鉻補充劑對體重的效應統計上達顯著但臨床無意義（−0.
D 🔴 D 反證據 主流反證據 ⚠️ medium — moderate promotional content
三項關鍵 meta-analysis（Onakpoya 2013 n=622、Pittler 2003 n=489、Tian 2013 n=392）均顯示鉻補充劑對體重的效應統計上達顯著但臨床無意義（−0.5 至 −1.1 kg），且全部作者明確標示「not clinically meaningful」、證據品質低。
L1 Examine 直接的「Weight」主要結局在體重控制條目下自評為 D 級（4 研究，n=174，Small Decrease，Negligible potential）；L4b EFSA 明確駁回鉻之減重/食慾宣稱；L5b Mayo、L5c Cleveland、L5d Harvard、L5e TOS/AACE 全體採不背書或明確反對立場；FTC 曾因鉻吡啶羧酸減重廣告提出欺騙性行銷訴訟。
臨床無意義的效應大小、低品質研究基礎、監管機構全面拒絕核准、學會體系完全無推薦，四項條件同時成立，D 級評定合理且保守。
⚖️
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 0.49
D
C
B
A
S
← 反證據 / 無效有效 / 強證據 →
最終評級
D · 主流反證據
信心度
74%
證據方向大致一致
證據層級
E1
Cochrane 高品質系統性回顧／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 = 0.49
- 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 — | C→D 因 scope.conflation_risk=true 且 L11 獨評較低 (B7-2 tier cap)
- detect_disputes — 偵測到 0 個 hard + 0 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status
Chromium picolinate for reducing body weight: meta-analysis of randomized trials
結論：Pooled difference of -1.1 kg (95% CI -1.8 to -0.4) favoring chromium picolinate over placebo; authors flagged the effect size as small and of debatable clinical relevance, with poor methodological quality of included trials.
前往 PubMed
Chromium supplementation in overweight and obesity: a systematic review and meta-analysis of randomized clinical trials
結論：Statistically significant but very small reduction in body weight (MD -0.50 kg, 95% CI -0.97 to -0.03) and body fat percentage (MD -0.68%, 95% CI -1.32 to -0.04); authors explicitly concluded the magnitude is too small to be clinically meaningful and overall evidence quality is low.
前往 PubMed
Chromium picolinate supplementation for overweight or obese adults (Cochrane-style systematic review / Tian et al.)
結論：Chromium picolinate produced a statistically significant but small reduction in body weight (MD -1.1 kg, 95% CI -1.8 to -0.4) at 12-26 weeks; authors graded evidence as low quality and clinical relevance as uncertain. No significant difference in adverse events.
前往 PubMed
Effects of chromium picolinate on food intake and satiety
結論：Chromium picolinate 1000 mcg/day reduced food intake, hunger and fat cravings, and produced a modest decrease in body weight vs placebo at 8 weeks; small pilot sample limits generalizability.
前往 PubMed
A pilot study of chromium picolinate for weight loss
結論：No statistically significant difference in body weight, body composition, or insulin sensitivity between chromium picolinate and placebo over 24 weeks; small underpowered pilot.
前往 PubMed
L4a US FDA
謹慎
One small study suggests that chromium picolinate may reduce the risk of insulin resistance, and therefore possibly may reduce the risk of type 2 diabetes. FDA concludes, however, that the existence of such a relationship between chromium picolinate and either insulin resistance or type 2 diabetes is highly uncertain. 來源↗
L4b EU EFSA
反對
The Panel concludes that there is no evidence of beneficial effects associated with chromium intake in healthy subjects ... no Average Requirement (AR) and Population Reference Intake (PRI) can be defined; chromium is not an essential nutrient. 來源↗
L4c UK NHS
謹慎
You should be able to get all the chromium you need by eating a varied and balanced diet. Around 25 micrograms of chromium a day should be enough for adults. Having 10mg or less a day of chromium from food and supplements is unlikely to cause any harm. 來源↗
L4d TW TFDA / 衛福部
支持
每日食用量中，其鉻之總含量不得高於200微克 來源↗
L4e WHO
未表態
Chromium[VI] is carcinogenic to humans (Group 1). Metallic chromium and chromium[III] compounds are not classifiable as to their carcinogenicity to humans (Group 3). 來源↗
L5a NIH Office of Dietary Supplements
謹慎
Research suggests that chromium supplementation reduces body weight and body fat percentage to a very small, but statistically significant, extent. However, these effects have little clinical significance. 來源↗
L5b Mayo Clinic
反對
L5c Cleveland Clinic
反對
Chromium supplements are sold primarily as solutions for blood sugar regulation and weight loss... But there isn't good evidence to back up any of these health benefits. ... Newer studies have shown the effects of chromium on these and other conditions to be minimal at best. 來源↗
L5d Harvard Health
謹慎
However, chromium supplements have not been found to produce significant weight loss. 來源↗
L5e Specialty Society (condition-mapped)
反對
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
鉻在台灣社群討論量不高，多半夾在控糖、飯後嗜睡、阻斷類保健品話題中出現，少數提到嗜甜/食慾微降、飯後較不嗜睡，但對其「直接減重」效果普遍存疑，常被歸入減重保健品智商稅一類。
💬社群實感
分歧／無共識（少數反映嗜甜與食慾微降、飯後較不嗜睡，多數對減重效果存疑）
破解迷思 社群最常見的 3 個誤解
✓
事實以為鉻能直接燃脂／減重（實際研究顯示效果極微，約僅 1 公斤左右）
✓
事實把高劑量下的食慾降低誤當成真正的減重療效（實為副作用而非機轉）
✓
事實把三價鉻保健品與有毒的六價鉻重金屬污染混為一談
🩹 社群通報的副作用
- 噁心
- 腹瀉
- 頭痛
- 失眠
🏷️ 社群熱議品牌
依論壇被提及頻率，非銷售或品質排序。
- 三多（San Do）酵母鉻
- 善存（Centrum）
- GNC
⚠️ 列出僅代表「TW 社群討論度高」，不代表本站推薦或背書。本站不販售任何產品、無導購連結。
- 限制熱量的健康飲食型態
- 規律身體活動
- 結構化行為減重計畫
查看 ClaimReview 結構化資料 (JSON-LD)
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