Do You Have Masked Hypertension?

During your annual physical, your doctor praises your normal blood pressure.

But before indulging in a celebratory sigh of relief, you might want to consider new research findings.

Masked Hypertension

Masked hypertension truly is the silent killer. Find out what masked hypertension is, how to determine if you have it, and what to do about it.

Published in Circulation,1 Dr. Joseph Schwartz and colleagues at Columbia University and Stony Brook University discovered that more than 15% of 880 middle-aged men and women who had normal blood pressure readings in their doctors’ offices actually had masked hypertension.

Masked Hypertension: What Is It?

Essentially, masked hypertension is blood pressure that tends to be normal in the doctor’s office but higher outside the doctor’s office, reaching levels classified as high blood pressure, or hypertension, which is 140/90 or higher.

1 in 8 Americans

In a follow-up investigation published in the American Journal of Epidemiology,2 Dr. Schwartz and his team combined the data from their study in Circulation with data on 9,316 people from the U.S. National Health and Nutrition Examination Survey. Crunching the numbers, they estimated that more than 12% of Americans adults – 1 of every 8  – have masked hypertension.

In total, that’s 17 million people.

Most At Risk | Men, Diabetics

Masked hypertension appears to be more common among men than women. Risk of having the condition also increases with age, or if you have diabetes.

Masked hypertension, the researchers pointed out, poses the same dangers that any diagnosis of hypertension has, including increased risk of heart attacks, strokes, kidney failure, dementia, and early death.

White Coat Hypertension

These findings run counter to the traditional expectation that blood pressure levels in a doctor’s office would run higher than levels outside the office, called “white coat hypertension.”  The anxiety or stress that many patients may feel during a physical exam provides the typical explanation for elevated readings.

While “white-coat hypertension” may be the case for some people, these recent studies on masked hypertension indicate that the reverse may be true for others.

Masked Hypertension | Potential Causes

Dr. Norman Blum, MD, FACP, physician and educator at the Pritikin Longevity Center in Miami, offers several explanations as to why some of us might have masked hypertension.

“For starters, blood is often measured incorrectly in the doctor’s office, and for a variety of reasons, including miscuffing.”

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Other factors that could momentarily lower blood pressure while visiting the doctor include fasting several hours before the exam (often required for blood testing) or simply sitting quietly in the waiting room.

Wanting a Good “Report Card”

“It’s also possible that some people may adopt healthier habits in the days or weeks prior to a scheduled physical so that they’re looking good at the time of the exam,” adds Dr. Blum. “They’re aiming for a good ‘report card’ from their doctor. Their upcoming physical inspired them to curtail smoking and drinking, eat better, and exercise. But after the physical, they might fall back into their old blood-pressure-raising habits.”

For any one or more of the above reasons, it would hardly be surprising if some people temporarily lowered their blood pressure while in the doctor’s office.

Totally Unaware

But it’s certainly disturbing that the fully 17 million Americans with masked hypertension could remain unaware of the dangers they face.

Masked Hypertension | How To Find Out If You Have It

To avoid living with and perhaps dying from hidden and untreated high blood pressure, you first need to determine if you have masked hypertension.

You can request that your doctor order a 24-hour ambulatory monitor that you wear while you go about your daily activities. Periodically, it checks your blood pressure.

Home Monitors

Alternatively, you can purchase a personal monitor and check your own blood pressure and keep a log of results.

Cure for Masked Hypertension

“The vast majority of these 17 million Americans with masked hypertension would have their blood pressure normalized in a week or so at the Pritikin Longevity Center,” says Dr. Blum.

“You can buy a decent quality blood pressure monitor at nearly every pharmacy,” notes Dr. Blum.  “In fact, research has found that home-monitored blood pressure measurements are more reliable than doctor’s office measurements.”

After getting your home monitor, check your blood pressure several times a day. If you see your blood pressure topping 140/90 most days, you have hypertension. If it is between 120/80 and 139/89, you have pre-hypertension.

Pritikin Program

If after reading your home-based numbers, your doctor decides that you should be treated, he or she can begin by prescribing a healthy, low-sodium diet and exercise plan like the Pritikin Program.

“The vast majority of these 17 million Americans with masked hypertension would have their blood pressure normalized in a week or so at the Pritikin Longevity Center,” says Dr. Blum.

Lowering Blood Pressure

Consistently, studies3 published by researchers at UCLA have found that many people who come to Pritikin with high blood pressure leave Pritikin with normal or near-normal blood pressure. In fact, the majority of those taking anti-hypertension pills no longer require them, or they’ve had their dosages substantially reduced.

The Multi-Level Damages of Salt

Even if you don’t have high blood pressure, “it’s a good idea to adopt a healthy lifestyle like Pritikin,” adds Dr. Seth Marquit, MD, Medical Director at the Pritikin Longevity Center.

Himalayan Salt

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“Cutting back on salt, for example, has benefits independent of blood pressure. So even if you’re lucky enough to say, ‘My blood pressure is truly normal,’ continuing to eat a high-salt diet can inflict damage in other ways, such as renal stones, bone loss, and gastrointestinal cancers.”

Masked Hypertension | Bottom Line

If you’re concerned you might have masked hypertension, find out. Start using a home blood pressure monitor. Log your results. Share them with your physician.

If you do have masked hypertension, act. The really good news is that masked hypertension, like hypertension in general, can be easily and quickly treated through healthy lifestyle changes like the program taught for the last 42 years at the Pritikin Longevity Center.

What’s more, healthy Pritikin living not only lowers blood pressure, research has shown that it lowers the risk for a multitude of other health problems, including diabetes, pre-diabetes, metabolic syndrome, high cholesterol, high triglycerides, obesity, and heart disease.

So, should you unmask hypertension, see it as the inspiration for taking the steps that promote a long and healthy life overall.

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