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Should you not drink coffee if you have high blood pressure?

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.

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 is the healthiest liquid to drink?

Water is the best choice for quenching your thirst. Coffee and tea, without added sweeteners, are healthy choices, too. Some beverages should be limited or consumed in moderation, including fruit juice, milk, and those made with low-calorie sweeteners, like diet drinks.

hsph.harvard.edu - Healthy Drinks | The Nutrition Source

In the beginning, there was water—abundant, refreshing, providing everything the body needs to replenish the fluids it loses. Humans relied on it as the only beverage for millions of years. Milk was introduced with the advent of agriculture and the domestication of animals. Then came beer and wine and coffee and tea, all consumed for taste and pleasure as much as for the fluids they provide. The newcomers—sugary beverages including soda, sports drinks, and energy drinks—offer hydration but with a hefty dose of unnecessary calories that the body may have a hard time regulating. Alternatively, “diet” drinks offer sweetness without the calories, but does that make them a healthy choice?

With so many options, it’s easy to be confused about which beverages are best for our health. Follow the links below for an in-depth look at each, but if you’re short on time, here’s the takeaway:

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