APP and Alzheimer disease: Investigators compared the efficacy of three diets- a standard diet, a standard diet supplemented with purified bilberry anthocyanin powder and a standard diet supplemented with purified blackcurrant anthocyanin powder- on neuroprotection and concluded that both bilberry and blackcurrant extracts could be viable in this regard through the beneficial effect they exert on amyloid precursor protein and β-amyloid metabolism, which have been identified as pathogenic features of AD.