In this study, a lipid disorder Alzheimer’s disease (AD) model was developed with high-fat diet and d -galactose injected intraperitoneally (HFD & d -gal) to evaluate the activities of Buyang Huanwu Decoction (BYHWD) compared with donepezil hydrochloride. The learning and memory abilities of BYHWD were evaluated by Morris water maze test (MWM). The lipid levels in serum, histopathology, and immunohistochemistry of hyperphospho...