High blood pressure is a reading over 140/90 mmHg, which can be measured by your GP or with an at-home blood pressure monitor.
You can find out your blood pressure by measuring the levels in both arms using a monitor. Several items in your diet can raise blood pressure, including eating too much salt.
Drinking caffeine-laden drinks, such as coffee, can also raise your blood pressure.
The Mayo Clinic says you should test your blood pressure 30 minutes after drinking a beverage containing caffeine, to find out whether it had an effect. “Caffeine can cause a short, but dramatic increase in your blood pressure, even if you don’t have high blood pressure,” said the Mayo Clinic online.
“It’s unclear what causes this spike in blood pressure, but it can raise levels by up to 10 mmHg.”
“However, if you drink coffee regularly you may experience little or no effect on your blood pressure from caffeine.” Read more