Does coffee raise blood pressure?

mayoclinic.org - Caffeine: How does it affect blood pressure? - Mayo Clinic

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How does caffeine affect blood pressure? Answer From Francisco Lopez-Jimenez, M.D.

Caffeine may cause a short, but dramatic increase in your blood pressure, even if you don't have high blood pressure. It's unclear what causes this spike in blood pressure. The blood pressure response to caffeine differs from person to person. Some researchers believe that caffeine could block a hormone that helps keep your arteries widened. Others think that caffeine causes your adrenal glands to release more adrenaline, which causes your blood pressure to increase. Some people who regularly drink caffeinated beverages have a higher average blood pressure than do those who drink none. Others who regularly drink caffeinated beverages develop a tolerance to caffeine. As a result, caffeine doesn't have a long-term effect on their blood pressure. If you have high blood pressure, ask your doctor whether you should limit or stop drinking caffeinated beverages. The U.S. Food and Drug Administration says 400 milligrams a day of caffeine is generally safe for most people. However, if you're concerned about caffeine's effect on your blood pressure, try limiting the amount of caffeine you drink to 200 milligrams a day — about the same amount as is generally in two 8-ounce (237-milliliter) cups of brewed coffee. Keep in mind that the amount of caffeine in coffee, energy drinks and other beverages varies by brand and method of preparation. Also, if you have high blood pressure, avoid caffeine right before activities that naturally increase your blood pressure, such as exercise, weightlifting or hard physical labor. To see if caffeine might be raising your blood pressure, check your blood pressure before drinking a cup of coffee or other caffeinated beverage and again 30 to 120 minutes afterward. If your blood pressure increases by about 5 to 10 points, you may be sensitive to the blood pressure raising effects of caffeine. If you plan to cut back on caffeine, do so gradually over several days to a week to avoid withdrawal headaches.

With Francisco Lopez-Jimenez, M.D.

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What can you drink before bed to lower blood pressure?

The top drinks for lowering blood pressure include: Water. Fruit juices. Pomegranate. Prune. Cranberry. Cherry. Vegetable juice. Tomato. Raw beet. Tea. Black. Green. Skim milk.

emedicinehealth.com - 10 Drinks to Lower Blood Pressure & Hypertension Treatment

Diet changes are part of managing high blood pressure. This can include making healthy beverage choices. The top drinks for lowering blood pressure include:

What Is High Blood Pressure?

High blood pressure (hypertension) is a condition in which the force of blood pumping through the arteries is consistently too high. When this occurs, the walls of the arteries are extended beyond their normal limit, which can lead to damage and scarring and put people at risk for heart attack, stroke, and kidney disease.

Blood pressure is expressed in two numbers:

Systolic blood pressure (the first/top number): measures the pressure in the blood vessels when the heart beats (the first/top number): measures the pressure in the blood vessels when the heart beats Diastolic blood pressure (the second/bottom number): measures the pressure in the blood vessels when the heart is at rest between beats High, elevated, and normal blood pressure is usually defined in the following ranges:

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