What happens to your blood pressure when you're not measuring it?
Your blood pressure changes as you work, relax and sleep. Could occasional readings be missing part of the picture?
נבדק על ידי Dr Colin Tidy, MRCGPנכתב על ידי Hilo פורסם במקור 28 Oct 2026
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Think about the last time you had your blood pressure checked. Perhaps you were sitting in your GP's surgery, waiting for the cuff to inflate. Seconds later, two numbers appeared on the screen.
Those numbers provide useful information about your blood pressure at that moment. But blood pressure changes throughout the day and night. Some people even have higher readings at the GP's surgery than at home - known as white coat hypertension - while others have normal readings in the surgery but higher blood pressure elsewhere (masked hypertension).
ממומן
Hilo: A smarter way to understand your blood pressure
Your blood pressure changes throughout the day. Now you can understand it better. Hilo is a clinically validated, cuffless wearable that automatically measures your blood pressure throughout the day and night, even while you sleep. With around 35 readings a day, Hilo helps you discover patterns and track trends over time, without the hassle of regular cuff measurements. Just wear it and get a clearer picture of your blood pressure.
Your blood pressure is constantly changing
Blood pressure isn't a fixed number. It rises and falls as your body responds to daily life, whether you're rushing for a train, dealing with a stressful meeting, drinking coffee, or relaxing on the sofa. Stress, activity, sleep, and diet can all influence it.
These changes are often normal, but looking at readings taken over time can help healthcare professionals understand your blood pressure more fully than a single measurement.
What happens to your blood pressure while you sleep?
For many people, blood pressure falls by around 10-20% during sleep compared with daytime levels. This is called nocturnal dipping and forms part of the body's natural daily rhythm.1
Not everyone follows this pattern. Some people have a smaller fall overnight, while others have higher blood pressure during sleep than when awake. Research has associated unusual night-time blood pressure patterns with cardiovascular risk.1
Because most home monitors require you to sit quietly and take a reading, checking blood pressure while you're asleep isn't straightforward. Healthcare professionals can use 24-hour ambulatory monitoring - a portable cuff that inflates at intervals, including overnight - when a fuller assessment is needed.
Can your blood pressure be high without you knowing?
Yes. High blood pressure - or יתר לחץ דם - often has no noticeable symptoms. The World Health Organization (WHO) estimates that around 44% of adults with hypertension worldwide are unaware they have it.2
High blood pressure can increase the risk of התקף לב, שבץ, and מחלת כליות. That's why checking it matters even if you feel well.3
The NHS advises adults aged 40 and over to have their blood pressure checked at least every five years, or more often if recommended. If your readings are repeatedly high, speak to your GP. 3
A fuller picture of your blood pressure
Home blood pressure monitoring and clinician-prescribed 24-hour ambulatory monitoring can help reveal patterns that may not appear during an appointment. New wearable technology offers another way to collect readings during everyday life.
Hilo is a clinically validated blood pressure monitoring system that takes automatic readings during the day and night when measurement conditions are suitable. Its wrist-worn band uses optical sensing technology, while an upper-arm cuff is used for initial calibration and recalibration every 30 days.
ה Hilo App brings readings together to show blood pressure patterns and averages over time. Reports can be shared with a healthcare professional to support conversations about cardiovascular health.
The bigger picture
One blood pressure reading can be useful. Understanding how readings vary across days and nights can add context and help you have a more informed conversation with your GP.
Discover Hilo
Explore how Hilo's automatic day-and-night measurements and app-based reports can help you understand your blood pressure patterns.
בחירות המטופלים עבור לחץ דם
בריאות הלב וכלי הדם
אילו מאכלים עוזרים להוריד לחץ דם?
What if some of the most powerful tools for lowering blood pressure (hypertension) were already in your kitchen? Many everyday foods contain nutrients that naturally relax your blood vessels, reduce inflammation, and support healthier circulation. By knowing which foods lower blood pressure naturally, you can make simple diet changes that help reduce hypertension and protect your long-term heart health.
מאת הת'ר איינסוורת'
בריאות הלב וכלי הדם
בעלייה: מה גורם ללחץ דם גבוה אצל צעירים
High blood pressure is affecting the under 50s more and more frequently - but why? We explore the lifestyle habits among Millennials that may be responsible for this rise. Whatever your age, by addressing these causes of high blood pressure, you can help keep your blood pressure healthy and try to avoid the serious health issues it can lead to.
מאת לין סטיבן
קריאה נוספת והפניות
אודות המחברצפה בפרופיל המלא
נכתב על ידי
Hilo
אודות המבקרצפה בפרופיל המלא
Dr Colin Tidy, MRCGP
רופא כללי, מחבר רפואי
MBBS, MRCGP, MRCP (Paediatrics), DCH
ד"ר קולין טיידי הוא רופא ב-NHS, הממוקם באוקספורדשייר.
הצטרפו לשיחה
שתפו את מחשבותיכם או חוויותיכם עם אחרים ב קהילות המטופלים שלנו.
שאלו, שתפו, התחברו.
עיין בדיונים, שאל שאלות ושתף חוויות במאות נושאים בריאותיים.
מרגיש לא טוב?
הערך את הסימפטומים שלך באינטרנט בחינם
הירשמו לניוזלטר של פיישנט
המנה השבועית שלך של עצות בריאות ברורות ואמינות - נכתבה כדי לעזור לך להרגיש מעודכן, בטוח ובשליטה.
על ידי הרשמה אתה מקבל את שלנו מדיניות הפרטיות שלנו. באפשרותך לבטל את המנוי בכל עת. לעולם לא נמכור את הנתונים שלך.