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Sep 23, 2022 · Key findings: • About 15% of individuals in the community between the ages of 40 and 75 have a blood pressure rise at night-time. • This 24-hour blood pressure pattern is called ‘reverse dipping’, because pressure rises (‘reverse dip’) during the night instead of falling (‘dipping’), the latter being the normal pattern for ...
- The Bigger Picture. You've probably heard to watch the amount of salt you eat, especially if you're concerned about your blood pressure. That's because it makes your body hold on to water, putting extra stress on your heart and blood vessels.
- Added Sugar. It may be even more important than salt in raising your blood pressure, especially in a processed form like high-fructose corn syrup. People with more added sugars in their diet see a significant rise in both their upper and lower numbers.
- Loneliness. This isn't just about the number of friends you have -- it's about feeling connected. And being stressed or depressed doesn't fully explain the effect.
- Sleep Apnea. People with sleep apnea have higher odds of getting high blood pressure and other heart problems. When your breathing is repeatedly interrupted while you're sleeping, your nervous system releases chemicals that raise your blood pressure.
- Overview
- ‘Silent killer’ health risks
- Causes of nighttime spikes
- Focusing on prevention
•Researchers reported that people whose blood pressure rises while they’re sleeping have a higher risk for cardiovascular disease.
•Experts say nighttime blood pressure readings are a more accurate measurement of a person’s circulatory health.
•They urge medical professionals to have people’s blood pressure monitored during sleep periods.
•They said regular sleeping patterns as well as lower salt intake can help lower nighttime blood pressure readings.
You might think that your body is most at ease while you’re asleep.
But some people can have spikes in blood pressure while they slumber that can have potentially deadly consequences.
“Results indicate that nighttime systolic blood pressure was a significant, independent risk factor for cardiovascular events,” said Dr. Kazuomi Kario, the lead author of the study and a professor of cardiovascular medicine at Jichi Medical University in Tochigi, Japan.
“The study highlights the importance of including nighttime blood pressure monitoring in patient-management strategies and will hopefully encourage physicians to ensure that antihypertensive therapy is effectively lowering blood pressure throughout the 24-hour dosing period.”
For the study, Japanese researchers studied 6,359 people, using wearable monitors to measure both daytime and nighttime blood pressure.
The participants all had at least one cardiovascular risk factor, and most were taking medication to control their blood pressure. However, none had symptomatic cardiovascular disease when the study started.
During 2-year to 7-year follow-ups of the participants, researchers said they found those who had nighttime systolic blood pressure that was 20 millimeters of mercury (mm Hg) above their daytime systolic reading were significantly more likely to experience atherosclerotic cardiovascular disease and heart failure.
Overall, study participants experienced a total of 306 cardiovascular events, including 119 strokes, 99 diagnoses of coronary artery disease, and 88 diagnoses of heart failure.
Kario told Healthline that blood pressure rises naturally to excrete excess sodium from the kidneys, particularly among people with high sensitivity to salt intake.
“Usually, high daytime blood pressure is enough to excrete the sodium,” he said. “However, in the subjects with increased circulating blood volume (due to increased salt intake and salt sensitivity), blood pressure needs to increase not only during daytime but also nighttime to excrete the sodium from the body. This is the compensated mechanism, but it’s harmful to the heart.”
Dr. Raymond Townsend, a medical expert with the American Heart Association and director of the Hypertension Program at University of Pennsylvania, told Healthline that ideally all blood pressure measurements would be taken at night, not during the day.
“When you’re asleep at night, it’s the purest time for blood pressure,” he said. “It’s a window into how that person’s system is working.”
Townsend, who has administered thousands of nighttime blood pressure tests, said there’s potential for using consumer devices for at-home blood pressure monitoring.
A device called the WatchBP Home from Microlife, for example, can provide up to three nocturnal blood pressure results per night.
Dr. Victoria Shin, a cardiologist at Torrance Memorial Medical Center in California, told Healthline that this and other research has led more physicians to direct patients to take their blood pressure medication at night.
“Taking blood pressure medication in the evening improves blood pressure throughout [the night and day] and reduces mortality overall,” she said.
Kario said that sympathetic nervous activation, autonomic nervous dysfunction, sleep apnea, and poor sleep quality may also contribute to increase nocturnal blood pressure.
“Poor sleeping habits include drinking caffeine or alcohol later in the day, napping during the day, non-consistent bedtime, poorly controlled sugar, prostate hypertrophy, exercising too late in the evening, blue light from your digital device, dreams, or emotional confrontations (like an argument with your partner or spouse or any other anxiety-producing situation),” said Dr. Leonard Pianko, a cardiologist in Miami, Florida.
Medical conditions that can trigger a spike in your nocturnal blood pressure include diabetes, thyroid, and kidney problems, Pianko added.
Kario recommends reducing salt intake, administrating diuretics, and taking mineral corticoid receptor blockers to help reduce risk of nocturnal hypertension.
Jun 2, 2023 · Nocturnal hypertension is high blood pressure that a person experiences at night. Frequently waking with the need to urinate, sleep apnea, and difficulty breathing are all symptoms of high...
Oct 10, 2023 · Untreated high blood pressure at night can lead to heart attack, stroke, and other cardiovascular problems due to the added strain on the heart and blood vessels during sleep. How can one manage and treat high blood pressure, specifically during the nighttime?
- Nocturnal hypertension symptoms include early morning headaches, fatigue, and frequent nocturnal urination. These symptoms may not always be obviou...
- Lifestyle choices, such as a high salt intake and consuming alcohol or caffeine before bedtime, can raise nighttime blood pressure.
- Managing and treating nocturnal hypertension involves adjusting medication timings, making lifestyle changes, addressing underlying conditions, and...
Oct 23, 2024 · Blood pressure normally lowers at night while sleeping. When it doesn't, that's known as nocturnal hypertension, or high blood pressure at night. Learn the risk factors and how to...
Clearly, reductions in sleep duration are associated with increases in blood pressure 19 which has prompted mechanistic studies seeking to elucidate the underlying mechanism (s). Metabolism. Subjects exposed to experimental sleep restriction tend to consume more calories which may precipitate obesity-related hypertension.
