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总结
多家英媒报道，近期一些“微塑料遍布人体、甚至大脑含一勺塑料”等结论受到科学界质疑。研究人员指出，部分检测方法灵敏度与特异性不足、样本易受实验室空气与器具污染影响，且统计推断被过度解读，导致对体内微塑料含量与分布的估计可能被夸大。专家强调塑料污染与暴露仍值得关注，但现有证据不足以支持最骇人的数量说法，公众应避免恐慌并等待更规范的研究与复核。
正文
'A bombshell': doubt cast on discovery of microplastics throughout human body The Guardian Good News: You Probably Don't Have a Spoon's Worth of Plastic in Your Brain After All Slate The 'bombshell' science that casts doubt on claims about microplastics The Telegraph Worried about plastic in your brain? Scientists say otherwise The Times Can we stop worrying about microplastics in our brains? Experts cast doubt on the scary studies Good Housekeeping
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