1. Major risk factors: (1) hypertension or taking antihypertensive medication; (2) hypercholesterolemia or taking lipid-lowering medication; (3) diabetes mellitus; (4) age over 50 years. (2) General risk factors: (1) atrial fibrillation or other heart disease; (2) sleep apnea; (3) history of stroke or heart disease in the immediate family (father, mother, siblings, children); (4) smoking; (5) heavy alcohol consumption; (6) lack of physical activity and inability to do it consistently 3 times a week (at least 20-30 minutes each time); (7) diet containing too much saturated fatty acids or fats; (8) lack of physical activity; (9) lack of physical activity; (10) lack of physical activity; (11) lack of physical activity; (12) lack of physical activity; (13) lack of physical activity; (14) lack of physical activity; (15) lack of physical activity; (16) lack of physical activity. (8) obesity; (9) male; (10) frequent bleeding, swelling and pain of the gums, gum recession, loose teeth, loss of teeth; (11) history of ischemic eye disease; (12) sudden deafness. Those with 2 of the above major risk factors, or with 1 major risk factor and 2 or more (including 2) general risk factors, or a previous history of transient ischemic attack (TIA) with stroke are recommended to receive stroke screening.