AGENT DE DÉCOMPOSITION DES FIBRILLES DE ß-AMYLOÏDE, AGENT THÉRAPEUTIQUE/PROPHYLACTIQUE DESTINÉ À TRAITER/PRÉVENIR UNE MALADIE ASSOCIÉE À LA FIBRILLOGENÈSE DE LA ß-AMYLOÏDE, ET COMPOSITION ALIMENTAIRE UTILISÉE À CETTE FIN
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.