Autoimmune diseases arise from a combination of non-modifiable risk factors, such as gender and genetic predispositions, and modifiable factors, including lifestyle choices and environmental exposures. Given the potential to alter modifiable risk factors, this study aims to evaluate the global burden, temporal trends, and inequalities of autoimmune diseases attributed to modifiable risk factors from 1990 to 2021. The study will provide up-to-date evidence to inform strategies for mitigating the impact of these risk factors on autoimmune diseases worldwide.