Small strokes are a warning.

My cousin in Toronto has her BP checked every time she is in the pharmacy. She had minor effects which were all gone within 3 months when she cam over to visit. Enid is now an evangelist for aspirin tablets (Acetylsalicylic acid, C9H8O4) 1/4 a day I think though in the UK I know you can get whole tablets of the right dosage. It slows the clotting that causes the strokes.

Best of luck.