Research is being conducted on the potential benefits of certain probiotic strains, including Lactiplantibacillus plantarum AM2, in relation to cognitive impairment and Alzheimer's disease. Some studies suggest that specific probiotic strains may have protective effects against Alzheimer's disease-like pathology. The probiotic properties and effects of various lactobacilli strains are being investigated in different contexts, including their potential impact on serum amino acid profiles and enzymatic activity.