Benzene is harmful to the hematopoietic system and can cause leukemia. However, benzene is still being used in various industries including furniture, rubber, plastic products, and metal product manufacturing.

The white blood cell count of workers in general equipment, special equipment, chemical raw materials, and chemical products manufacturing decreased significantly. The enterprises in which benzene concentration exceeded the occupational exposure limit were small enterprises and private enterprises.

Regular health examinations are necessary for benzene-exposed workers. In addition, the monitoring of benzene concentration in small enterprises and private enterprises should be strengthened.

Airflow obstruction is the hallmark of many chronic respiratory diseases and may indicate the potential for the development of other progressive diseases. There are currently no representative studies of lung function in Beijing. An up-to-date estimation of the characteristics of lung function and airflow obstruction is thus needed.

The estimated prevalence of airflow obstruction was 14.68% in Beijing, 2017–2018. The values of vital capacity, forced vital capacity, and forced expiratory volume in the first second were 3.09 L, 2.66 L, 2.22 L, respectively.

Effective public health strategy for lung in Beijing should target older people, current or former smokers, and individuals who live in urban environments, have a low education level, exhibit a high smoking index, and/or have an abnormal body mass index.

Previous studies have illustrated the benefits of physical activity on cardiometabolic multimorbidity (CMM), while limited studies have concentrated on the trajectory of CMM progression.

Through multi-stage regression analysis, we found that physical activity could reduce the risk of CMM incidence. Participants initially free of cardiometabolic diseases (CMDs) may benefit more from engaging in recommended physical activity.

Adults, especially those initially free of CMDs, should engage in WHO-recommended physical activity as early as possible to prevent CMD incidence and further progression.

Several studies have reported that maternal antenatal intention to breastfeed is a strong predictor of actual breastfeeding duration. However, little research has investigated whether maternal postpartum intention also extends breastfeeding duration.

Maternal postpartum intention to breastfeed was a protective factor for extending actual breastfeeding duration after controlling potential confounders.

It is crucial to address and promote intrinsic and extrinsic factors that influence a mother’s intention to breastfeed after delivery, thereby extending the actual breastfeeding duration.