Pharmaceutical composition for prevention, treatment or delay of alzheimer's disease or dementia containing g protein-coupled receptor 19 agent as active ingredient

The present invention relates to a pharmaceutical composition for prevention, treatment or delay of Alzheimer's disease or dementia and a food composition for prevention, treatment or delay of Alzheimer's disease or dementia containing a G protein-coupled receptor 19 (GPCR19) agent or a pharmaceutically acceptable salt thereof as an active ingredient. The G protein-coupled receptor 19 agent according to the present invention does not harm the health of an individual when administered to the individual, has efficacy in improvement of cognitive and behavioral disorders, inhibits cell death of brain tissues, increases immunity and decreases formation of amyloidβ plaque, and thus can show an efficacy of preventing Alzheimer's disease or dementia, or delaying or treating a progression of the diseases in an individual with an already developed form of the diseases.