In comparison to the AD Model group, the serum level of CORT was dose‐dependently decreased in the 50 mg/kg (279.70 ± 16.84 ng/mL vs. 244.52 ± 16.52 ng/mL, p < 0.01) or 100 mg/kg (279.70 ± 16.84 ng/mL vs. 228.10 ± 8.35 ng/mL, p < 0.01) EGCG group (Figure 4G). Here, CORT is linked to Alzheimer disease.