Association between the oxidative balance score and thyroid function: Results from the NHANES 2007-2012 and Mendelian randomization study

This cross-sectional study analyzed data from 6,222 adults from NHANES (2007–2012) to investigate the relationship between the oxidative balance score (OBS)—a composite index reflecting dietary and lifestyle factors affecting oxidative stress—and thyroid function, focusing on free thyroxine (FT4) and total thyroxine (TT4). Using weighted multivariable linear regression, the study found