Observing the identified OR values, HDL cholesterol might be the risk factor (OR > 1, p < 0.05) and “total cholesterol”, “apolipoprotein B”, and “ratio of apolipoprotein B to apolipoprotein A1” were the protective factors (OR < 1, p < 0.05) for thyroid cancer. Here, APOA1 is linked to thyroid cancer.