According to the Alzheimer's Association, Alzheimer's disease makes up 60 to 80 percent of dementia cases.
ອີງຕາມສະມາຄົມໂຣກ Alzheimer, ໂຣກໂຣກ Alzheimer ມີເຖິງ 60 ຫາ 80 ເປີເຊັນຂອງກໍລະນີທີ່ເປັນໂຣກສະຫມອງເສີຍ.