AMYLOID BETA FIBRIL DECOMPOSING AGENT, AND THERAPEUTIC OR PREVENTIVE AGENT AND THERAPEUTIC OR PREVENTIVE FOOD COMPOSITION FOR DISEASES CAUSED BY AMYLOID BETA FIBRIL FORMATION
An object of the present invention is to provide: an amyloid β fibril decomposing agent containing a natural product as an active ingredient； a therapeutic or preventive agent for a disease caused by amyloid β fibril formation； and a therapeutic or preventive food composition for a disease caused by amyloid β fibril formation. Provided are: an amyloid β fibril decomposing agent containing a dry powder, ground product and/or extract of an earthworm as an active ingredient； a therapeutic or preventive agent for a disease caused by amyloid β fibril formation； and a therapeutic or preventive food composition for a disease caused by amyloid β fibril formation. The disease caused by amyloid β fibril formation is preferably Alzheimer's disease.
