Socioeconomic stratification in the association between tea consumption and skeletal muscle mass among oilfield workers

Objectives: Tea consumption is a culturally embedded behavior in China, but its association with skeletal muscle health remains unclear, particularly in occupational populations. This study examined the relationship between tea consumption and appendicular skeletal muscle mass (ASM) among oilfield workers and assessed whether socioeconomic status (SES) modifies this association. Methods: Multivariable linear regression models were used to evaluate the association between tea consumption and ASM. Smooth curve fitting analyses were conducted to visualize potential dose-response relationships. SES-stratified and interaction analyses were performed to examine effect modification. Sensitivity analyses were carried out to test the robustness of the findings. Results: for interaction = 0.031). Sensitivity analyses yielded consistent findings. Conclusion: Tea consumption is positively associated with skeletal muscle mass among oilfield workers, with the strength of this association varying across SES. These findings highlight the importance of considering social context when promoting dietary strategies to support muscle health in occupational populations.