正确 有充分科学证据支持 证据确定性: 高 初步 C-UPF-09

有些食品添加剂是不安全的;二氧化钛(E171)被认定作为食品添加剂不再安全。

简而言之: 这一说法是正确的:欧洲食品安全局(EFSA)于2021年得出结论,由于无法排除遗传毒性方面的担忧,二氧化钛(E171)不能再被视为安全,欧盟随后撤销了其许可;这是一个预防性的结论,而不是危害的证明,而且据报道,一些欧盟以外的监管机构持不同意见。
结论: 正确:E171已不再被允许用于欧盟的食品中。

原始表述

无阿拉伯语原文。

译文

有些食品添加剂是不安全的;二氧化钛(E171)被认定作为食品添加剂不再安全。

出处

来源状态
档案网站编辑
归属
Archive editors (study selection and narrative are the archive's, not necessarily Elawady's)
出处
https://eltayebat.com/rule/ultra-processed-foods/
归属的不确定性
The archive homepage states that the forbidden-food section is supported by research 'independently of Dr. Diaa's words'. No evidence was found that Elawady himself cited these studies.
所声称的机制

Genotoxicity concern.

所声称的健康影响

Possible DNA damage.

涉及人群

General population

Elawady 设定的地域限制

none found

科学评估

正确 – 该说法有可靠证据支持。

证据确定性: 高 – 进一步研究极不可能改变该评估。

1. 说法是什么?

E171 is unsafe (implied by citation).

2. 哪些内容可证实是正确的?

EFSA concluded E171 'can no longer be considered as safe' because genotoxicity concerns could not be ruled out; the EU withdrew its authorisation (Reg. (EU) 2022/63, in force 7 February 2022, with transition).

3. 哪些内容是错误或夸大的?

Nothing incorrect; the conclusion rests on inability to rule out genotoxicity rather than demonstrated harm in humans. The example shows that the EU re-evaluation system can remove additives, i.e., additives are not a homogeneous risk.

4. 哪些内容仍不明确?

Human health effects at former intakes.

5. 哪些研究支持该说法?

6. 哪些研究与该说法相矛盾?

None.

7. 对德国和欧洲而言情况如何?

E171 is no longer permitted in foods in the EU.

8. 关于埃及的已知情况是什么?

Egyptian regulatory status of E171 was not verified.

9. 合理的实际结论是什么?

对如今欧盟的消费者来说已无关紧要;在仍使用E171的地方则仍有意义。

评估详情

证据确定性的依据

EFSA 2021 opinion (A-UPF-21) and EU withdrawal of authorisation by Regulation (EU) 2022/63 (verified on the European Commission website).

来源质量

Archive cites EFSA opinion in bibliography only (no narrative statement; claim derived from citation).

地区可推广性

EU-specific regulatory action; other countries may differ.

个体例外情况

Not applicable.

说法的地域范围
普遍性(生物学/医学)
最近审核
2026年10月26日 初步

科学证据详解

有充分科学证据支持 – 该说法与一致的高质量证据相符。

研究问题: Did EFSA conclude that titanium dioxide (E171) can no longer be considered safe as a food additive, and are some food additives unsafe?

研究问题详解 (other (regulatory fact check))
人群
General population
干预或暴露
E171
对照
Not applicable
地域范围
universal biology
结局指标
  • Regulatory safety conclusion

研究结果按作者报告呈现。我们的评估见下文。

哪些证据支持该说法?

  • EFSA: titanium dioxide no longer safe

    EFSA FAF Panel et al.. EFSA J 2021 · PMID 33976718 · DOI 10.2903/j.efsa.2021.6585 风险评估全文,含结构化偏倚风险评估

    EFSA 2021: genotoxicity concern cannot be ruled out; E171 no longer considered safe.

    实际结果
    No ADI established.
    方法学质量
    high (regulatory)
    相关性
    direct
    局限
    Precautionary.

    原始文献

  • How the EU regulates food additives

    European Commission (DG SANTE). European Commission website 2026 (accessed) 指南 / 立场声明已核查全文

    EU withdrew E171 (Reg. (EU) 2022/63).

    实际结果
    In force 7 February 2022.
    方法学质量
    high (official)
    相关性
    direct

    原始文献

哪些证据不支持该说法?

总体证据说明了什么?

基于上述研究的编辑评估——其本身并非研究结果。

哪种观点有更好的证据支持?

True: EFSA concluded E171 can no longer be considered safe; the EU withdrew it.

为什么有些研究权重更大

Primary regulatory documents.

因果关系是否已确立? 不适用 Regulatory fact; based on inability to exclude genotoxicity, not on demonstrated human harm.

仍存在的不确定性

Human health effects at former intakes; positions of other regulators (not verified).

合理的结论

Correct; note that 'no longer safe' means safety could not be confirmed.

为什么研究结果看起来互相矛盾?

EFSA (precautionary, genotoxicity not excluded) vs reported positions of some non-EU agencies (test materials not representative) - different interpretation of the same data.

这是否取决于国家?
一般生物学效应
Not applicable.
饮食习惯
Not applicable.
食品原产地
Not applicable.
污染物
TiO2 still permitted in some non-EU markets (status in Egypt not verified).
本国生产条件
Not assessed.
法律规则
Banned in EU food since 2022.
实际监测数据
None.

足以改变结论的地区差异没有可靠数据支持。

总体证据的确定性(GRADE,简化版)
主要结局
Regulatory conclusion
起始等级
高(随机试验)
结果
高

由单名审查者参照 GRADE 方法进行的简化评估;并非正式的 GRADE 专家组评估。GRADE 评价的是针对某一结局的整体证据,而非单项研究。

已核查的临床指南和官方声明
  • European Commission (DG SANTE): Re-evaluation of food additives (I-UPF-06) (2026 (accessed)) · 原始文献
    Page fetched 2026-10-26 (HTTP 200): additives authorised before 2009 are re-evaluated by EFSA; the page also documents the titanium dioxide (E171) withdrawal (content as recorded in I-UPF-06).
检索策略

本次审查的文献检索记录(检索式采用原数据库语法)。

数据库日期检索式检索目标命中数纳入数
Europe PMC2026年10月26日(TITLE:"titanium dioxide" OR TITLE:"E171" OR TITLE:"E 171") AND (TITLE:food OR TITLE:dietary OR TITLE:oral) AND PUB_YEAR:[2021 TO 2026] AND (TITLE:safety OR TITLE:assessment OR TITLE:review OR TITLE:genotoxic*)双向18
European Commission website2026年10月26日https://food.ec.europa.eu/food-safety/food-improvement-agents/additives/re-evaluation_en (re-fetched)指南1
Web (FSANZ)2026年10月26日foodstandards.gov.au titanium dioxide pages (two guessed URLs; HTTP 404; not used)反对性证据0

核查深度如何?

3 项相关研究:2 项核查了全文(其中 1 项进行了结构化偏倚风险评估),1 项基于摘要核查,0 项仅核查了文献信息。 尚未进行由两名独立审查者完成的正式评估,也尚未进行独立的人类专家审核。

最近一次科学审核: 2026年10月26日

评定结论的变更历史
  1. 2026年10月25日 · 第 1 阶段 · 初始评估: 正确 (高)
  2. 2026年10月26日 · 第 4 阶段(系统证据审查) · 在扩展证据后重新审查;评定结论不变: 正确 (高)
    Disagreement among regulators does not change the factual EU conclusion.
    新来源: I-UPF-122

通俗解释

欧洲食品安全专家于2021年得出结论,白色着色剂二氧化钛(E171)不能再被视为安全,因为无法排除其对遗传物质造成损害。欧盟于2022年禁止在食品中使用它。这表明,添加剂会被重新审查,并且可能被撤销许可。

与该说法相关的研究

支持该说法的研究 (2)

  • EFSA: titanium dioxide no longer safe

    EFSA FAF Panel et al.. EFSA J 2021 · PMID 33976718 · DOI 10.2903/j.efsa.2021.6585
    风险评估被 Tayebat 档案网站引用全文,含结构化偏倚风险评估

    EFSA could not rule out DNA damage and concluded E171 is no longer safe; the EU then banned it.

    该研究是否支持这一具体说法? 是 · 方法学质量: 高 · 证据确定性:见该说法的总体评估

    原始文献 · 科学细节

    研究通俗解读
    研究人员想了解什么?

    Is E171 safe as a food additive?

    研究是如何开展的?

    Regulatory scientific opinion (risk assessment).

    研究了多少人、动物或样本?

    Not applicable; Not applicable

    实际发现了什么?

    Low absorption but possible accumulation; no general/organ toxicity up to 1,000 mg/kg bw/day (E171); potential immunotoxicity, inflammation, neurotoxicity, aberrant crypt foci; genotoxicity concern (DNA strand breaks, chromosomal damage) could not be ruled out; E171 no longer considered safe.

    观察到的效应有多大?

    Not applicable

    研究结果对日常生活意味着什么?

    One additive withdrawn after re-evaluation.

    该研究有哪些局限?

    Based on animal and laboratory studies; the decision was precautionary because a risk of DNA damage could not be ruled out, not because harm in people was shown; applies to one colouring (E 171) only.

    它对 Elawady 的具体说法说明了什么?

    Supports C-UPF-09; limits C-UPF-11 (additives not uniformly harmless).

    研究结果是否适用于德国和欧洲?

    High.

    从该研究中明确不能得出什么结论?

    That all additives are harmful.

    科学细节 →

  • How the EU regulates food additives

    European Commission (DG SANTE). European Commission website 2026 (accessed)
    指南 / 立场声明独立交叉核查已核查全文

    EU additives need authorisation, are re-evaluated, and E171 was banned in 2022.

    该研究是否支持这一具体说法? 是 · 方法学质量: 高 · 证据确定性:见该说法的总体评估

    原始文献 · 科学细节

    研究通俗解读
    研究人员想了解什么?

    Regulatory framework for food additives in the EU.

    研究是如何开展的?

    Official regulatory information pages (read).

    研究了多少人、动物或样本?

    Not applicable; Not applicable

    实际发现了什么?

    All EU additives must be authorised and listed with conditions of use (Reg. 1333/2008, Annex II Union list) based on safety assessment, technological need and not misleading consumers. Additives permitted before 20 January 2009 are re-evaluated by EFSA under Reg. (EU) 257/2010. Regulation (EU) 2022/63 (adopted 14 January 2022, in force 7 February 2022) withdrew the authorisation of titanium dioxide (E171), with transitional measures.

    观察到的效应有多大?

    Not applicable

    研究结果对日常生活意味着什么?

    Additives are checked and can be withdrawn.

    该研究有哪些局限?

    Regulatory status may change

    它对 Elawady 的具体说法说明了什么?

    Supports C-UPF-09; context for C-UPF-11.

    研究结果是否适用于德国和欧洲?

    Directly applicable in EU/Germany.

    从该研究中明确不能得出什么结论?

    Safety of any individual additive not mentioned.

    科学细节 →

与该说法相矛盾或限制该说法的研究 (1)

  • Industry-linked critique of the EU titanium dioxide decision

    Warheit DB. Front Toxicol 2024 · PMID 39100893 · DOI 10.3389/ftox.2024.1333746
    叙述性综述独立交叉核查已核查摘要

    A former employee of a titanium dioxide maker argues that EFSA was wrong and says other countries' agencies disagreed.

    Industry-linked perspective reporting that several non-EU agencies disagreed with EFSA's E171 conclusion.

    该研究是否支持这一具体说法? 否 · 方法学质量: 极低 · 证据确定性:见该说法的总体评估

    原始文献 · 科学细节

    研究通俗解读
    研究人员想了解什么?

    To argue against EFSA's E171 conclusion.

    研究是如何开展的?

    Opinion article.

    研究了多少人、动物或样本?

    Not applicable.

    实际发现了什么?

    Claims EFSA misjudged the genotoxicity data.

    观察到的效应有多大?

    Not applicable.

    研究结果对日常生活意味着什么?

    Regulators disagree; the EU still banned it.

    该研究有哪些局限?

    Strong conflict of interest.

    它对 Elawady 的具体说法说明了什么?

    Limits but does not refute C-UPF-09.

    研究结果是否适用于德国和欧洲?

    EU ban stands.

    从该研究中明确不能得出什么结论?

    Cannot show E171 is safe.

    科学细节 →

结果不一或不明确的研究 (0)

该组中没有研究。

地区背景

德国 / 欧盟

E171 is no longer permitted in foods in the EU.

埃及

Egyptian regulatory status of E171 was not verified.

在我的国家适用什么?

一般科学评估

正确 正确:E171已不再被允许用于欧盟的食品中。

以下食品安全领域与该说法相关:

  • 添加剂与加工
  • 监管、进口、召回、标签

选择一个国家,查看针对该国已核查的信息。

局限:法律规则描述的是允许什么,而不是每一种食品实际含有什么。检测数据来自样本,只有结合其方法细节才有意义。

居住或购买所在国 与另一个国家比较

参考文献

  1. Safety assessment of titanium dioxide (E171) as a food additive.. EFSA FAF Panel et al.. EFSA J 2021 · PMID 33976718 · DOI 10.2903/j.efsa.2021.6585
  2. European Commission: Re-evaluation of food additives (incl. Q&A on titanium dioxide, Regulation (EU) 2022/63) and EU rules on food additives (Regulation (EC) No 1333/2008). European Commission (DG SANTE). European Commission website 2026 (accessed)
  3. Safety of titanium dioxide (E171) as a food additive for humans.. Warheit DB. Front Toxicol 2024 · PMID 39100893 · DOI 10.3389/ftox.2024.1333746

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