Age at menarche in relation to risk of chronic obstructive pulmonary disease: Results from the China Kadoorie Biobank study of 300,000 Chinese women.

Background: Age at menarche has important implications for lung function. However, little is known about its association with chronic obstructive pulmonary disease (COPD). The present study aims to investigate age at menarche in relation to the risk of COPD among Chinese women.

Pregnancy loss and risk of cardiometabolic multimorbidity in Chinese women: the China Kadoorie Biobank study.

Background: While the association between pregnancy loss and individual cardiometabolic diseases (CMDs) is well-established, its impact on the risk of coexisting CMDs remains unclear. Therefore, the aim of this study is to investigate the association between pregnancy loss with the risk of cardiometabolic multimorbidity in Chinese women.

Method: We analyzed the cross-sectional data of 299,582 female participants aged 30-79 years old from the China Kadoorie biobank.

Association between pregnancy and pregnancy loss with COPD in Chinese women: The China Kadoorie Biobank study.

Background: Chronic obstructive pulmonary disease (COPD) is an inflammatory lung disease characterized by airflow blockage. Pregnancy and pregnancy loss may be related to an elevated risk of COPD, although studies have yet to report on this association. Hence, this study aims to investigate the association between pregnancy and pregnancy loss with the risk of COPD among Chinese women.

Pregnancy loss and the risk of rheumatoid arthritis in Chinese women: findings from the China Kadoorie biobank.

Considering the female preponderance of rheumatoid arthritis (RA), and disease onset typically after the reproductive years, pregnancy and childbirth may play a role in the aetiology of the disease. Adverse outcomes of pregnancy have been found to precede the diagnosis of autoimmune diseases, including RA, but the evidence is scant and inconsistent. Therefore, we investigate whether pregnancy loss is associated with the risk of RA in Chinese women.