Is a blood pressure reading of 140/90 high at age 45?

A single reading of 140/90 is at the threshold for high blood pressure, but one reading isn't enough for a diagnosis. Check it on several days, seated and rested for five minutes, ideally with a validated home monitor, in the morning and evening. If the average stays at or above 140/90 (or above 130/80 if you have diabetes or kidney disease), please see a doctor. Less salt, regular walks, limiting alcohol and not smoking all help. Seek urgent care if your blood pressure is above 180/120 with chest pain, breathlessness, weakness or a severe headache.