孟德尔随机化框架：健身补充剂与肌无力症因果关联分析

3. Results 3.1 Mendelian Randomization Framework Figure 1 illustrates the conceptual framework of the Mendelian randomization analysis in this study. The figure depicts the relationships between the instrumental variable (SNP), the exposure (fitness and related metabolites), and the outcome (myasthenia gravis). This framework underpins our strategy to infer the causal relationship between fitness supplements and related metabolites and the risk of myasthenia gravis.