Heart & metabolism
High blood pressure
Half of American adults have high blood pressure. Would you know if you did?
High blood pressure rarely causes symptoms, so the reading is how you find out — and how it is taken changes the number. Here is what the numbers mean, how to measure properly at home, and what measurably helps.
In 30 seconds
The short answer
Blood pressure is written as two numbers, like 120/80 mm Hg: the force as your heart pumps, over the pressure between beats.2 For most adults, healthy is below 120/80; consistent readings of 130 or higher on top, or 80 or higher on the bottom, count as high.6 It usually causes no signs you can feel,8 so the reading is how you find out — and the way it is taken can change the number.13
- It is common and often unknown. Half of American adults have it, and many don't know.1
- One reading is not a diagnosis. It takes two or more readings at separate appointments.7
- Technique changes the number. The wrong cuff size alone can change a reading.13
- Treatment works. Controlling blood pressure helps prevent or delay heart attack, stroke and kidney disease.24
Taking a reading that means something
Taking a reading that means something
The same routine every time, at home or at a pharmacy.
Prepare
No exercise, coffee or cigarettes for 30 minutes. Go to the bathroom first.11
Sit for 5 minutes
Position
Back supported, feet flat, legs uncrossed, bare upper arm resting at heart level.1218
Measure twice
At least 2 readings, 1 minute apart, morning and evening.17
Record and share
Write down every reading for 5 days and report them to your provider.17
When the clinic and home disagree
White coat hypertension
Masked high blood pressure
What the numbers mean
| Category | Top number (systolic) | And / or | Bottom number (diastolic) |
|---|---|---|---|
| Normal | Less than 1204 | and | Less than 80 |
| Elevated | 120 to 1294 | and | Less than 80 |
| High blood pressure, stage 1 | 130 to 1394 | or | 80 to 89 |
| High blood pressure, stage 2 | 140 or higher4 | or | 90 or higher |
| Hypertensive crisis | Higher than 1805 | or | Higher than 120 |
A diagnosis needs consistent readings: two or more, at separate appointments.7 Readings above 180/120 need immediate medical attention.5
When and how to check
- Have it checked at least once a year; regular home monitoring is also recommended.10
- Use an approved home device, and practice with your provider or nurse.1620
- The cuff should fit snugly, its bottom edge just above the elbow.21 Too small or too big changes the reading.13
- Digital monitors are the best choice for most people, but an irregular heart rate makes them less accurate.19
What the research says
- About 1 in 3 U.S. adults with high blood pressure aren't aware they have it.9
- High blood pressure often causes no signs you can see or feel.8
- Blood pressure changes throughout the day with your activities — one reading is a snapshot.3
- Controlling blood pressure can help prevent or delay chronic kidney disease, heart attack, heart failure and stroke.24
- In the NIH SPRINT study, lowering systolic pressure to less than 120 in adults 50 and older significantly reduced cardiovascular disease and death.25
- In older adults the top number is often 130 or higher while the bottom stays below 80 — isolated systolic hypertension.39
Sodium: where it comes from, and how much
Sodium is the part of eating with the clearest numbers. Most of it is already in the food before you add any.
Sodium per day, in milligrams
Average U.S. intake, the recommended limit, and the lower DASH level.
National figures and recommendations, not a measurement of any person or of a ProperHealth or Clarkson service.
The clinic's approach
The Pakistan Institute of Medical Advancement in Karachi, whose documents inform this site, mentions blood pressure once, in a sheet about EDTA. Here is what it says, and what independent evidence shows.
The clinic's blood pressure claim, and the evidence
One clinic document mentions blood pressure. The clinic's words first, then independent evidence.
EDTA presented as something that "will control the blood pressure"
Listed in the clinic's treatment notesRegulator safety warning- Where the clinic says this
- Brochure set, page 4.40
- The clinic's stated rationale
- The sheet lists blood pressure among the conditions EDTA will control, next to opening blocked arteries.40
- Evidence and limitations
- None of the sources used here shows that EDTA lowers blood pressure. Chelation drugs need a prescription and a clinician's supervision; the FDA has never approved a chelation product for over-the-counter use, and it warns of dehydration, kidney failure and death, and of proven care being delayed.4142
- What this means for you
- Blood pressure medicines help prevent heart attack, stroke and kidney disease.24 Do not reduce or stop them in favor of chelation; ask your prescriber about anything new.32
From the Dr. Majid Ali archive
A historical perspective
“In most people, BP values change appreciably from hour to hour”— Dr. Majid Ali, 2015-12-15Dr. Ali wrote a cluster of short, plain pieces on blood pressure in December 2015. He questioned whether population thresholds map neatly onto individuals, and stressed that readings move with the hour and the mood.
A number is a measurement of a person on a day, not a verdict, and current guidance agrees that readings change through the day, and that a diagnosis rests on repeated readings, not one.37
Where ProperHealth stops — and this boundary is firm. Dr. Ali wrote critically of blood pressure medicines and offered natural alternatives. The sources used here do not support those, or his own 'normal' range. Controlling blood pressure helps prevent or delay heart attack, stroke and kidney disease.24 Nothing here is a reason to reduce, delay or stop a blood pressure medicine.32
What to do next
Check that your cuff fits
Readings can be different if the cuff is too small or too big.13 It should sit snugly, its bottom edge just above the elbow.21
Take one reading properly
No coffee, exercise or cigarettes for 30 minutes, an empty bladder, and 5 minutes sitting quietly first.11
Log morning and evening for 5 days
At least 2 readings, 1 minute apart, each time. Record them all and share them with your provider.17
Look at one sodium source
Most sodium comes from packaged and prepared foods; the Nutrition Facts label shows how much.36
Keep taking your medicine
Home readings inform your prescriber's decisions. Keep taking your medication unless your doctor tells you to stop.32
Medicines, supplements and safety
A pharmacist can check your cuff fit and technique, flag medicines that raise readings, and help you take a useful log to your appointment. A pharmacist does not diagnose high blood pressure or change your doses.
- Some medicines raise blood pressure. Antidepressants, decongestants, hormonal birth control pills and anti-inflammatory painkillers such as ibuprofen can all raise it.33 If your numbers changed recently, bring your medicine list.
- Over-the-counter products count too. Mention non-prescription medicines, vitamins and supplements — they can affect your blood pressure and how well your medicine works.34
- Side effects have options. Talk to your provider about side effects; they may change the dose or give you a different medicine.31 Many people need two or more medicines.30
- Keep taking it. Medication can control blood pressure but can't cure it, so keep taking it unless your doctor tells you to stop.32
- Dizzy when you stand? Get up slowly and stand for a moment before walking. Low blood pressure can make you lightheaded, weak, dizzy or faint.35
Compared
Conventional and integrative care, compared
What blood pressure medicines achieve, their side effects and limits, what raises blood pressure, and the non-drug approaches with the strongest evidence.
What conventional treatment does
- When lifestyle changes alone do not control it, a provider may prescribe medicines; many people need two or more.30
- Controlling blood pressure can help prevent or delay chronic kidney disease, heart attack, heart failure, stroke and possibly vascular dementia.24 In the NIH SPRINT study, lowering systolic pressure below 120 in adults 50 and older significantly reduced cardiovascular disease and death.25
Limits and adverse effects
- Medication can control blood pressure but cannot cure it; it has to be continued unless a doctor says to stop.32
- Side effects are common enough that the dose or the medicine may need changing — talk to your provider rather than stopping.31 Blood pressure that drops too low can make you lightheaded, weak, dizzy or faint, especially on standing.35
- Other medicines interfere: antidepressants, decongestants, hormonal birth control and anti-inflammatory painkillers can all raise blood pressure,33 and over-the-counter products, vitamins and supplements can change how well the medicine works.34
What contributes to the condition
- Over 70% of dietary sodium comes from packaged and prepared foods, not the salt shaker;36 Americans average about 3,400 mg a day against a recommended limit under 2,300 mg.37
- Age changes the pattern: in older adults the top number is often 130 or higher while the bottom stays below 80.39
- For people who drink, more than two drinks a day for men or one for women raises the risk.29
Integrative and naturopathic approaches, by evidence
Evidence levels: EstablishedEmergingHypothesisNot supported
- Established
The DASH eating plan lowers blood pressure, and 1,500 mg of sodium a day lowers it further than 2,300 mg; it needs no special foods.38
- Established
Losing even 3% to 5% of body weight can improve blood pressure;26 even a small amount of activity may help, such as walking 10 minutes a day,27 building to at least 150 minutes a week.28
- Not supported
A clinic sheet says EDTA "will control the blood pressure";40 none of the sources used here shows that. The FDA has never approved a chelation product for over-the-counter use41 and warns of dehydration, kidney failure and death, and of proven care being delayed.42
Keep taking prescribed medicine while you work on food, activity and weight; bring your home readings and your medicine list to the visit.
When to get help now
Each warning sign cites the official guidance behind it. The wording still needs pharmacist sign-off.
- A reading above 180/120 with chest pain, trouble breathing, a sudden severe headache, numbness or weakness, a change in vision or trouble speaking — call 911. Do not wait to see if it comes down.434445
- Sudden face droop, arm weakness or speech difficulty — call 911. This can be a stroke.46
- A reading above 180/120 without symptoms — wait 5 minutes and check again; if it is still that high, call your healthcare provider.47
- Dizziness on standing that makes you unsteady — contact your prescriber; your blood pressure may be too low. Fainting, confusion, a weak and rapid pulse or cold skin — call 911.484950
- Your monitor repeatedly reports an irregular heartbeat — book an assessment; the readings may also be unreliable.5152