Different teas could improve lipid metabolism in SAMP8 mice on high-fat diet. (A) Comparison of body weight, epididymal adipose tissue weight, and body fat ratio of mice in different treatment groups; (B) HE staining (200×) and fat cell diameter statistics of epididymal fat tissue of mice in different treatment groups, bar = 500 µm; (C) Detection of lipid content in the brain tissue of mice in different treatment groups; (D) Detection of IL-6 and ATP content in brain tissue of mice in different treatment groups. Compared with P8 group, # p < 0.05, ## p < 0.01; Compared with HFD + P8 group, * p < 0.05, ** p < 0.01, n = 3. Note: green tea (T1) as control, old white tea (T9), black tea (T23) and dark tea (T26).