Compared with the control diet , the walnut diet significantly reduced non-HDL-cholesterol ( walnut vs. control : -103 vs. -32 mg/dL ; p = 0.025 ) and apolipoprotein-B ( -5.01.3 vs. -0.21.1 mg/dL ; p = 0.009 ) after adjusting for age , gender , BMI and diet sequence .