Long-term exposure to PM1 and thyroid diseases in China

Background: Globally prevalent, thyroid diseases are linked to environmental factors such as air pollution. This study examines the link between particulate matter (PM)1 exposure and thyroid disease rates in China. Methods: We analyzed data from 73,900 adults across 31 Chinese provinces, using a hig...

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Main Authors: Jing Wang, Di Teng, Kaijie Yang, Siying Liu, Cihang Lu, Zhongyan Shan, Weiping Teng, Yongze Li
Format: Article
Language:English
Published: Bioscientifica 2025-08-01
Series:European Thyroid Journal
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Online Access:https://etj.bioscientifica.com/view/journals/etj/14/4/ETJ-25-0106.xml
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author Jing Wang
Di Teng
Kaijie Yang
Siying Liu
Cihang Lu
Zhongyan Shan
Weiping Teng
Yongze Li
author_facet Jing Wang
Di Teng
Kaijie Yang
Siying Liu
Cihang Lu
Zhongyan Shan
Weiping Teng
Yongze Li
author_sort Jing Wang
collection DOAJ
description Background: Globally prevalent, thyroid diseases are linked to environmental factors such as air pollution. This study examines the link between particulate matter (PM)1 exposure and thyroid disease rates in China. Methods: We analyzed data from 73,900 adults across 31 Chinese provinces, using a high-resolution spatial–temporal extremity tree model to estimate PM1 and PM2.5 levels, and thyroid function tests to assess disease prevalence. Multivariate-adjusted ORs evaluated PM1’s link to thyroid disease. This cross-sectional study is adept at identifying associations but cannot establish causality due to its single-time data collection limitation. Results: Higher PM1 level exposure was significantly linked to an increased prevalence of thyroid diseases, including overt hypothyroidism, autoimmune thyroiditis (AIT), and TgAb positivity. A linear dose–response relationship was observed between PM1 concentration and both AIT and TgAb positivity. The study also revealed a significant association between PM1 exposure and autoimmune overt hypothyroidism, suggesting that thyroid dysfunction may be primarily mediated through autoimmune mechanisms. In addition, iodine status significantly influenced PM1’s effects, with lower levels enhancing susceptibility to thyroid issues. Furthermore, every 1% increase in the PM1/PM2.5 ratio was related to the prevalence of overt hypothyroidism (OR = 1.03; 95% CI: 1.03–1.04) and subclinical hypothyroidism (OR = 1.03; 95% CI: 1.03–1.04). Conclusions: PM1 exposure is associated with thyroid diseases, particularly AIT and TgAb positivity, with iodine status playing a modifying role. PM1 may be a key factor in PM2.5-related thyroid disease risk. Further prospective cohort studies are warranted to validate these findings.
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spelling doaj-art-5cd0a4824dca46288f1bf0b5b036928c2025-08-20T03:36:26ZengBioscientificaEuropean Thyroid Journal2235-08022025-08-0114410.1530/ETJ-25-01061Long-term exposure to PM1 and thyroid diseases in ChinaJing Wang0Di Teng1Kaijie Yang2Siying Liu3Cihang Lu4Zhongyan Shan5Weiping Teng6Yongze Li7Department of Endocrinology and Metabolism and The Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, First Hospital of China Medical University, Shenyang, ChinaDepartment of Endocrinology and Metabolism and The Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, First Hospital of China Medical University, Shenyang, ChinaDepartment of Endocrinology and Metabolism and The Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, First Hospital of China Medical University, Shenyang, ChinaDepartment of Endocrinology and Metabolism and The Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, First Hospital of China Medical University, Shenyang, ChinaDepartment of Endocrinology and Metabolism, Shengjing Hospital of China Medical University, Shenyang, ChinaDepartment of Endocrinology and Metabolism and The Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, First Hospital of China Medical University, Shenyang, ChinaDepartment of Endocrinology and Metabolism and The Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, First Hospital of China Medical University, Shenyang, ChinaDepartment of Endocrinology and Metabolism and The Institute of Endocrinology, NHC Key Laboratory of Diagnosis and Treatment of Thyroid Diseases, First Hospital of China Medical University, Shenyang, ChinaBackground: Globally prevalent, thyroid diseases are linked to environmental factors such as air pollution. This study examines the link between particulate matter (PM)1 exposure and thyroid disease rates in China. Methods: We analyzed data from 73,900 adults across 31 Chinese provinces, using a high-resolution spatial–temporal extremity tree model to estimate PM1 and PM2.5 levels, and thyroid function tests to assess disease prevalence. Multivariate-adjusted ORs evaluated PM1’s link to thyroid disease. This cross-sectional study is adept at identifying associations but cannot establish causality due to its single-time data collection limitation. Results: Higher PM1 level exposure was significantly linked to an increased prevalence of thyroid diseases, including overt hypothyroidism, autoimmune thyroiditis (AIT), and TgAb positivity. A linear dose–response relationship was observed between PM1 concentration and both AIT and TgAb positivity. The study also revealed a significant association between PM1 exposure and autoimmune overt hypothyroidism, suggesting that thyroid dysfunction may be primarily mediated through autoimmune mechanisms. In addition, iodine status significantly influenced PM1’s effects, with lower levels enhancing susceptibility to thyroid issues. Furthermore, every 1% increase in the PM1/PM2.5 ratio was related to the prevalence of overt hypothyroidism (OR = 1.03; 95% CI: 1.03–1.04) and subclinical hypothyroidism (OR = 1.03; 95% CI: 1.03–1.04). Conclusions: PM1 exposure is associated with thyroid diseases, particularly AIT and TgAb positivity, with iodine status playing a modifying role. PM1 may be a key factor in PM2.5-related thyroid disease risk. Further prospective cohort studies are warranted to validate these findings.https://etj.bioscientifica.com/view/journals/etj/14/4/ETJ-25-0106.xmlpm1thyroid disordersiodineepidemiologychina
spellingShingle Jing Wang
Di Teng
Kaijie Yang
Siying Liu
Cihang Lu
Zhongyan Shan
Weiping Teng
Yongze Li
Long-term exposure to PM1 and thyroid diseases in China
European Thyroid Journal
pm1
thyroid disorders
iodine
epidemiology
china
title Long-term exposure to PM1 and thyroid diseases in China
title_full Long-term exposure to PM1 and thyroid diseases in China
title_fullStr Long-term exposure to PM1 and thyroid diseases in China
title_full_unstemmed Long-term exposure to PM1 and thyroid diseases in China
title_short Long-term exposure to PM1 and thyroid diseases in China
title_sort long term exposure to pm1 and thyroid diseases in china
topic pm1
thyroid disorders
iodine
epidemiology
china
url https://etj.bioscientifica.com/view/journals/etj/14/4/ETJ-25-0106.xml
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AT diteng longtermexposuretopm1andthyroiddiseasesinchina
AT kaijieyang longtermexposuretopm1andthyroiddiseasesinchina
AT siyingliu longtermexposuretopm1andthyroiddiseasesinchina
AT cihanglu longtermexposuretopm1andthyroiddiseasesinchina
AT zhongyanshan longtermexposuretopm1andthyroiddiseasesinchina
AT weipingteng longtermexposuretopm1andthyroiddiseasesinchina
AT yongzeli longtermexposuretopm1andthyroiddiseasesinchina