Recently, a claim has been circulating online that ‘wearing masks for a long time causes lung nodules.’ This claim lacks scientific evidence and is a typical health-related myth. Lung nodules are small, round or oval-shaped shadows (less than 3 cm in diameter) detected on lung imaging scans. Their causes are complex and include infections (such as tuberculosis or fungal diseases), inflammation, benign tumors, or early-stage lung cancer—but not mask-wearing.Medical masks are designed to filter airborne particles, bacteria, and viruses. They are made from safe, breathable materials and do not release harmful substances. Wearing a properly certified mask does not introduce foreign particles into the lungs or cause tissue damage. Even with prolonged use, as long as standard-compliant masks are worn and replaced regularly, they pose no health risks.Moreover, extensive clinical studies and epidemiological data have found no causal link between mask-wearing and increased lung nodule incidence. On the contrary, during periods of high air pollution or infectious disease outbreaks, wearing masks correctly helps reduce inhalation of harmful particles and pathogens, offering protective benefits for the respiratory system.Therefore, the public should approach online information rationally, avoid spreading unverified claims, and rely on science-based practices to safeguard health.
近期，网络上流传一种说法：‘长期戴口罩会导致肺结节’。这种说法缺乏科学依据，属于典型的健康谣言。肺结节是指在肺部影像检查中发现的小于3厘米的圆形或类圆形阴影，其成因复杂，主要包括感染（如结核、真菌）、炎症、良性肿瘤或早期肺癌等，与佩戴口罩无直接关联。医用口罩的设计目的是过滤空气中的颗粒物、细菌和病毒，其材质安全、透气性良好，不会释放有害物质。正常佩戴口罩不会导致肺部吸入异物或造成组织损伤。即使长时间佩戴，只要选择符合标准的口罩并注意更换，就不会对健康造成负面影响。此外，大量临床研究和流行病学数据并未发现戴口罩与肺结节发病率上升之间存在因果关系。相反，在空气污染严重或传染病高发期，正确佩戴口罩有助于减少有害颗粒物和病原体的吸入，对呼吸系统具有保护作用。因此，公众应理性看待网络信息，不信谣、不传谣，科学防护才是保障健康的关键。
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