High blood pressure, or hypertension, rarely has any noticeable symptoms.
The only way to find out if your blood pressure is too high is to have it checked, the NHS said.
Hypertension increases the risk heart disease, heart attacks and strokes.
But, eating tomatoes could help to lower your blood pressure, studies have claimed.
Eating tomatoes everyday for eight weeks could lower systolic blood pressure by 10mmHg, and diastolic blood pressure by 4mmHg, an Israeli study claimed.
Thirty-one patients with high blood pressure took 250mg of tomato extract for the eight week period.
Tomatoes contain the powerful antioxidant lycopene, which helps to improve heart health, a nutritionist said.
Eating tomatoes raw is best for reducing blood pressure, said Dr Josh Axe.
“This most popular berry/veggie, laden with the heart-healthy nutrient lycopene, has been shown to lower high blood pressure significantly, sometimes rendering drug treatments completely unnecessary,” he said.
“Specifically related to research on coronary heart disease, tomato nutrition in particular was named as a determining factor in prevention.”
High levels of lycopene has also been shown to lower the risk of death in metabolic syndrome patients.
Prostate and breast cancer could also be prevented by eating more tomatoes, it’s been claimed.
High blood pressure symptoms can include vision problems, finding blood in your urine, fatigue and severe headaches.
It’s not always clear what causes high blood pressure, but your risk increases if you’re over 65 years old.
Overweight patients, smokers, and people of African or Caribbean descent are also more likely to develop hypertension.
Cutting back on the amount of salt you eat, exercising regularly and getting at least six hours of sleep could all help to lower blood pressure, said the NHS.