Most clients can tell me their cholesterol number without hesitation. Many know what it was a year ago, and some can recall what it was the year before that.
Ask the same person about their blood pressure, however, and the answers tend to be much vaguer: “I think it’s fine,” or “It was a little high last time, but nothing serious.” A surprising number have not had it checked in over a year.
This is a striking pattern, because high blood pressure is one of the leading risk factors for early death worldwide. Around half of adults who have it do not know they have it, and of those who do, only about one in five has it properly under control.
There is also a huge amount of confusing advice online about blood pressure. This article breaks down what the research actually says, along with realistic habits that can genuinely help lower it naturally.
Jump to:
- Why Blood Pressure Deserves More Attention
- Why Most Blood Pressure Advice Online is Outdated
- Understanding Your Numbers
- Measuring Blood Pressure At Home
- What Actually Lowers Blood Pressure
- The Potassium Gap
- Salt and Salt Substitutes
- The Dairy Fat Question
- Things That Quietly Raise Blood Pressure
- Where to Start
- When Medication May Also Be Needed
- Summary
- References
- More Heart Health Articles You'll Enjoy
- 💬 Comments
Why Blood Pressure Deserves More Attention
High blood pressure (hypertension) is associated with stroke, heart attack, heart failure, atrial fibrillation, kidney disease, peripheral vascular disease, and sudden cardiac death.
But one of the biggest shifts in recent years has been the growing evidence linking high blood pressure to cognitive decline and dementia.
Researchers have suspected this connection for years, but more recent studies have reached a much stronger level of consistency and quality. Blood pressure in midlife, particularly during your 30s, 40s, and 50s, is now considered one of the strongest predictors of cognitive health later in life.
For many people, this is the point at which blood pressure stops feeling abstract. Heart disease can feel like a distant concern, particularly for people in their 30s and 40s. Dementia, especially for those who have watched a parent or grandparent live with it, often feels more immediate.
The reassuring part is that blood pressure is one of the most responsive numbers in the body to lifestyle change. Specific dietary, exercise, and behavioural interventions have measurable effects, often within weeks rather than months.
Why Most Blood Pressure Advice Online is Outdated
In 2024 and 2025, both the European Society of Cardiology and the American Heart Association released new blood pressure guidelines, the first significant updates in around seven years.
The previous American guideline was published in 2017, while the previous European guideline came out in 2018. That means much of the information still circulating online, including articles, videos, and even some patient handouts, is based on guidance that is now several years old.
Some of the biggest shifts in the newer recommendations include:
- Lower thresholds for intervention. Both European and American guidelines now recommend acting on blood pressure earlier, at numbers previously considered borderline.
- Formal recognition of potassium-enriched salt substitutes. Five years ago, this was an emerging idea. Today, the European Society of Hypertension (2023), the European Society of Cardiology (2024), and the American College of Cardiology / American Heart Association (2025) all formally recommend them as an effective tool for reducing sodium and increasing potassium intake. The World Health Organization issued its first-ever Global Report on Hypertension in 2023, identifying potassium-enriched salt as one of the most affordable, scalable strategies for reducing cardiovascular events worldwide.
- A stronger emphasis on the cognitive decline link, as mentioned above.
- Movement on the dairy fat question. While the formal DASH framework still recommends low-fat dairy, the underlying evidence has shifted considerably. This is covered in more detail below.
- Lifestyle as proper first-line treatment. Not as a polite suggestion before medication, but as a recommended first step with documented effects, given a 3–6 month trial period before pharmaceutical treatment is added for many lower-risk adults.
Understanding Your Numbers
Optimal blood pressure is 120/80 mmHg or below.
The 2024 European guideline introduced a new category called "elevated blood pressure," covering anything between 120–139 systolic or 70–89 diastolic. This sits between optimal and hypertension, and is now formally recognised as a category that warrants attention rather than reassurance.
Hypertension is generally defined as 130/80 mmHg or above (United States) or 140/90 mmHg or above (Europe). The thresholds at which medication is typically considered have come down on both continents.
Measuring Blood Pressure At Home
A single blood pressure reading at the doctor’s office does not always give the full picture. Some people experience “white coat hypertension,” where their blood pressure rises simply because they are nervous in a medical setting. Others have the opposite issue, where their readings look normal at the doctor’s office but run higher during everyday life.
This is why home monitoring is now strongly encouraged in newer blood pressure guidelines. Measuring your blood pressure at home, multiple times over days or weeks, gives a far more accurate view of what is really going on.
I have compiled a list of my preferred at home blood pressure monitors here.
To measure correctly at home:
- Use a validated upper-arm blood pressure monitor, as wrist monitors tend to be less accurate
- Measure your blood pressure in the morning before coffee, exercise, or breakfast, ideally around the same time each day
- Sit comfortably in a chair with your back supported, feet flat on the floor, and legs uncrossed
- Rest your arm on a table so it is level with your heart
- Try not to talk, scroll on your phone, or watch TV while taking the reading
- Take 3 readings, about 1 minute apart
- Ignore the first reading and average the second and third
- Repeat this daily for 7 days to get a more reliable overall picture
If possible, taking another set of readings in the evening can make the results even more accurate. It may sound a little tedious, but this approach gives a much more realistic picture of your blood pressure than a single reading taken at a pharmacy kiosk or during a rushed doctor’s appointment.
What Actually Lowers Blood Pressure
The 2025 American guideline includes a table of specific lifestyle changes alongside the average reduction in systolic blood pressure each one produces in someone with hypertension. These numbers are useful because they make it easier to weigh which interventions are likely to make the biggest difference.
| Lifestyle change | Average drop in systolic BP |
|---|---|
| Losing 5–10% of body weight | 6–8 mmHg (around 1 mmHg per kg lost) |
| Following a DASH-style diet | 5–8 mmHg |
| Reducing sodium below 2,300 mg/day (ideally under 1,500) | 6–8 mmHg |
| Consuming 3,500–5,000 mg of potassium per day | 6 mmHg |
| Using a potassium-enriched salt substitute | 5–7 mmHg |
| Aerobic exercise (90–150 minutes per week) | 4–8 mmHg |
| Resistance training twice per week | 2–7 mmHg |
| Reducing alcohol intake by half | 4–6 mmHg |
| Stress management (meditation, slow breathing) | 5–7 mmHg |
These effects are partly additive. Stacking two or three of these changes can produce a reduction in blood pressure comparable to a single antihypertensive medication, which typically lowers systolic BP by around 8–10 mmHg.
This reflects the direction of newer blood pressure guidelines, which place a much stronger emphasis on lifestyle treatment early on. For many lower-risk adults with mildly elevated blood pressure, healthcare providers may recommend a period focused on nutrition, exercise, weight management, sleep, and other lifestyle changes before medication is considered.
The Potassium Gap
Of all the underrated nutrition messages in the new guidelines, the most striking is this: most adults are eating significantly less potassium than they should.
The recommended daily intake is 3,500 to 5,000 mg. The average American woman consumes approximately 2,300 mg, less than half the upper target. Men do slightly better at around 2,900 mg, but still fall well below the recommendation.
Potassium plays several important roles in cardiovascular health. It supports vascular relaxation, contributes to healthy nerve and muscle function, and counterbalances the effects of sodium.
The two minerals operate as a paired system: high sodium combined with low potassium is the most cardiovascularly damaging pattern, while increased potassium intake can buffer some of the effects of higher sodium.
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Sources of potassium
The richest dietary sources of potassium are whole foods, particularly the categories that already form the foundation of a healthy diet:
- Vegetables: spinach, sweet potato, white potato (with skin), beetroot, tomato, broccoli, Brussels sprouts, mushrooms
- Fruits: banana, oranges, kiwi, melon, dried apricots, dried prunes
- Beans and legumes: lentils, kidney beans, chickpeas, black beans, white beans
- Dairy: milk, yogurt
- Fish: salmon, tuna
- Whole grains, nuts, and seeds also contribute meaningful amounts
Coffee and tea provide modest but consistent contributions as well.
A practical target most women can reach: two pieces of fruit, four to five servings of vegetables, and a serving of beans, lentils, or potato most days. This pattern alone moves most people significantly closer to the recommended intake.
Salt and Salt Substitutes
Sodium intake matters for blood pressure, but a common misunderstanding deserves correction: the salt shaker on the kitchen table is not the primary source of dietary sodium for most people.
For the average adult, around 70% of dietary sodium comes from packaged, processed, and restaurant foods e.g., bread, deli meats, canned soups, sauces, ready meals, and takeout. The salt added at home represents a much smaller portion. Cooking at home more often, even with generous home seasoning, is one of the most effective ways to reduce overall sodium intake.
When looking at packaged food, as a general guide:
- In the US, 5% Daily Value (DV) or less of sodium per serving is considered low, while 20% DV or more is considered high.
- In Ireland and Europe, labels usually list salt per 100g instead. Around 0.3g of salt per 100g is considered low, while 1.5g or more is considered high.
Potassium-enriched salt substitutes
Salt substitutes are products in which a portion of the sodium chloride (regular salt) has been replaced with potassium chloride. They taste similar to salt and offer a double benefit: lower sodium and higher potassium in a single swap.
The pivotal study supporting their use was the SSaSS trial (Salt Substitute and Stroke Study), published in the New England Journal of Medicine in 2021. The trial randomised approximately 21,000 adults at high cardiovascular risk in rural China to use either regular salt or a potassium-enriched substitute for cooking. After approximately five years, the group using the potassium-enriched salt substitute experienced fewer strokes, fewer cardiovascular events, and lower overall mortality. This is a substantial result for such a low-cost intervention.
The 2024 European Society of Cardiology guideline now gives potassium-enriched salt substitutes a Class I recommendation, the highest classification of evidence and clinical benefit. The 2025 American guideline includes them as well.
What to look for and where to find them
Salt substitutes fall into two main categories, and it helps to know the difference:
Reduced-sodium blends are a mix of sodium chloride and potassium chloride. They taste closest to regular salt because they still contain some sodium. The most recognisable example is LoSalt, which is approximately two-thirds potassium chloride and one-third sodium chloride. LoSalt is widely available in supermarkets across the UK, Ireland, US and online.
Sodium-free substitutes are made almost entirely of potassium chloride and contain no sodium at all. They take a little more getting used to because the flavour is slightly different. Some people notice a faint metallic or bitter aftertaste. Common brands available include:
- Nu-Salt
- NoSalt (also referred to as McCormick NoSalt)
- Morton Salt Substitute
These can be found in most major supermarkets in the seasoning aisle, or ordered easily online.
When choosing one, here are three things to check on the label:
- Potassium chloride should be listed as the first or main ingredient. This is what makes it a true potassium-enriched substitute rather than a herb-based blend.
- Check the sodium content per serving. A regular teaspoon of table salt contains around 2,300 mg of sodium. A reduced-sodium blend like LoSalt contains roughly one-third of that. A sodium-free substitute should contain little to no sodium at all.
- Don't confuse them with herb blends like Mrs. Dash or Dash Original. These are excellent for reducing sodium and adding flavour, but they do not contain potassium chloride, so they don't deliver the same blood pressure benefit.
The trial that produced the strongest results (SSaSS) used a substitute that was approximately 75% sodium chloride and 25% potassium chloride, closer in composition to a reduced-sodium blend like LoSalt than to a fully sodium-free product. Both types are useful, but for most readers transitioning from regular salt, a reduced-sodium blend tends to be the easiest starting point because the taste is closer to what you're used to.
Important caveats
Salt substitutes are not appropriate for everyone:
- People with kidney disease should not use them without medical supervision, as damaged kidneys may struggle to clear excess potassium.
- People taking medications that affect potassium balance including ACE inhibitors, angiotensin receptor blockers (ARBs), potassium-sparing diuretics, and aldosterone antagonists should consult a doctor before introducing potassium-enriched products.
- Anyone on regular prescription medication should check with a healthcare provider before making the switch.
A practical limitation is worth noting: if most of your sodium intake is coming from packaged or restaurant foods, swapping the salt at home will have a more limited effect. Salt substitutes work best alongside an overall shift toward whole foods, not as a replacement for it.
The Dairy Fat Question
One of the most outdated pieces of standard blood pressure advice is the recommendation to choose low-fat or fat-free dairy. The original DASH research, conducted in the 1990s, included low-fat dairy because the prevailing view at the time was that saturated fat in dairy raised cholesterol and, by extension, cardiovascular risk.
The evidence base has since shifted.
The PURE study (Prospective Urban Rural Epidemiology), published in the Lancet in 2018, followed over 130,000 people across 21 countries and found that higher dairy intake, including full-fat dairy, was associated with lower rates of cardiovascular disease and lower overall mortality, not higher.
The current best explanation for these findings centres on the concept of the dairy matrix. The nutrients in dairy such as calcium, magnesium, potassium, bioactive peptides, and the structural properties of the food itself appear to interact in ways that offset the effects expected from saturated fat in isolation. Fermented dairy products such as yogurt, kefir, and certain cheeses appear particularly neutral or even beneficial for cardiovascular health.
It is worth noting that while the underlying research has moved on, the formal DASH framework has not yet been re-validated using full-fat dairy. The 2025 American guideline therefore continues to reference low-fat dairy in the context of the DASH eating pattern.
In practical terms, most adults do not need to fear foods like plain full-fat yogurt, kefir, milk, or moderate amounts of cheese, especially fermented dairy products like yogurt and kefir.
In fact, these foods may be just as reasonable a choice as low-fat versions for many people. When it comes to reducing saturated fat intake, the bigger contributors are often foods like butter, processed meats, fast food, pastries, and fatty cuts of red meat rather than dairy fat itself.
Practical priorities for dairy choices:
- Plain yogurt rather than flavoured (added sugar in flavoured varieties is the larger concern)
- Fermented options such as yogurt and kefir over heavily processed cheese
- Sensible portions of cheese, used as a topping or accompaniment rather than as the centrepiece of a meal
Things That Quietly Raise Blood Pressure
Several factors that influence blood pressure are not always discussed in standard dietary advice, and some are routinely missed even by healthcare professionals. The 2025 American guideline includes a useful summary of these.
Caffeine. For people with hypertension, caffeine intake should be kept below 300 mg per day (approximately three cups of coffee). For those with severe or uncontrolled hypertension, the recommendation drops to under one cup per day. Caffeine is not problematic for healthy adults at moderate intakes, but for those whose blood pressure is already elevated, it is worth examining intake honestly.
Licorice deserves a special mention here. Real licorice, the kind used in some licorice candies and herbal teas, contains a compound called glycyrrhizin that can meaningfully raise blood pressure when consumed regularly over time. This does not apply to artificial licorice flavouring, but a daily habit of drinking licorice tea is worth paying attention to.
Weight-loss and "fat burner" supplements. Many of these contain bitter orange (synephrine), guarana, yohimbine, or ephedra-related compounds, all of which can elevate blood pressure, sometimes significantly. Anyone taking pre-workout, weight-loss, or "energy" supplements should review the label carefully.
St. John's Wort. This herbal supplement does not typically raise blood pressure on its own, but in combination with certain antidepressants (MAOIs and SSRIs) it can cause dangerous spikes. It is worth discussing with a doctor before combining it with any psychiatric medication.
Alcohol. Both regular and binge drinking raise blood pressure. The new guidelines recommend limits of two drinks per day for men and one for women. Many women experience meaningful improvement after reducing intake, particularly those who drink most evenings.
Where to Start
For anyone whose blood pressure is not where they would like it to be, a practical starting sequence:
1. Measure properly at home. A validated home cuff and a week of careful readings provides a reliable baseline.
2. Add before subtracting. Many people fail at "eat less salt" but succeed at "eat more vegetables, beans, and fruit." Focusing on what to add to the plate brings most of the potassium-related benefits naturally.
3. Reduce reliance on packaged and restaurant foods. Even shifting from four meals out per week to two can meaningfully reduce sodium intake. Home cooking does not need to be elaborate.
4. Walk more. The new guidelines recommend 90–150 minutes of aerobic activity per week, which can be met by 15–20 minutes of walking on most days. Two sessions of resistance training per week add further benefit.
5. Review alcohol intake. A glass of wine most evenings is one of the most common contributors to creeping blood pressure I see in clinic. Even halving intake produces measurable improvement.
6. Audit supplements. Anything labelled for "energy" or "fat burning" deserves a careful look at the ingredient list.
7. Discuss other contributors with your doctor. Persistently elevated blood pressure can be driven by insulin resistance, sleep apnea, thyroid dysfunction, or chronic stress. These conditions may require independent assessment and treatment.
The goal is not to address all of these at once. One or two changes, sustained for six to eight weeks, then reassessed, tends to produce more durable progress than an attempt at a complete overhaul.
When Medication May Also Be Needed
Lifestyle change is properly first-line therapy, but it is not always sufficient on its own. The new guidelines are clear: for blood pressure that consistently sits above 140/90 mmHg, medication is usually indicated, and the consequences of leaving very high blood pressure untreated are serious.
Modern blood pressure medications are generally well-tolerated, often inexpensive, and effective. Many people manage well on a low dose combined with continued lifestyle changes. Medication is not a failure of self-management; it is one tool among several.
The lifestyle work continues to matter even alongside medication, because:
- It can reduce the dose of medication required
- It improves overall cardiovascular risk in ways pharmaceuticals do not address
- It often improves day-to-day wellbeing such as energy, sleep and mood in ways unrelated to blood pressure itself
The most effective approach is lifestyle as the foundation, with medication added when the foundation is not enough on its own.
Summary
Blood pressure matters more than most people realise, not just for the heart, but for the brain. It is one of the strongest predictors of dementia risk, and yet most adults pay it little attention until something goes wrong.
The good news is that it is also one of the most responsive numbers in the body. A few well-chosen changes, such as eating more vegetables, beans, and fruit; cooking at home more often; walking most days; cutting back on alcohol; and switching to a potassium-enriched salt, can lower blood pressure as effectively as a medication.
A few priorities are worth taking seriously: eating more potassium-rich foods, since most adults consume less than half the recommended amount; reconsidering the long-standing advice to choose low-fat dairy, as plain full-fat yogurt and milk are now considered reasonable, sometimes preferable choices; looking honestly at less obvious contributors such as caffeine, alcohol, fat-burner supplements, and even regular licorice consumption; and measuring blood pressure properly at home.
If a single action is going to make the biggest difference, it is the last one. A simple home cuff and one careful week of readings provides more useful information than years of occasional clinic checks. The number may surprise, or it may reassure. Either way, knowing is where everything else starts.
References
- WHO Hypertension Factsheet
- Jones DW, et al. 2025 AHA/ACC/AANP/AAPA/ABC/ACCP/ACPM/AGS/AMA/ASPC/NMA/PCNA/SGIM Guideline for the Prevention, Detection, Evaluation and Management of High Blood Pressure in Adults. Circulation. 2025 Aug 14. doi: 10.1161/CIR.0000000000001356
- McEvoy JW, Touyz RM, et al. 2024 ESC Guidelines for the management of elevated blood pressure and hypertension. European Heart Journal. 2024 Aug 30.
- Mancia G, Kreutz R, et al. 2023 ESH Guidelines for the management of arterial hypertension. Journal of Hypertension. 2023.
- World Health Organization. Global report on hypertension: the race against a silent killer. Geneva: WHO; 2023.
- World Health Organization. WHO global report on sodium intake reduction. Geneva: WHO; 2023.
- Sacks FM, Svetkey LP, Vollmer WM, et al. Effects on blood pressure of reduced dietary sodium and the Dietary Approaches to Stop Hypertension (DASH) diet. New England Journal of Medicine. 2001;344(1):3-10.
- Neal B, Wu Y, Feng X, et al. Effect of salt substitution on cardiovascular events and death (SSaSS). New England Journal of Medicine. 2021;385:1067-1077.
- Dehghan M, Mente A, Rangarajan S, et al. Association of dairy intake with cardiovascular disease and mortality in 21 countries from five continents (PURE): a prospective cohort study. Lancet. 2018;392(10161):2288-2297.
- Reddin C, Ferguson J, Murphy R, et al. Global mean potassium intake: a systematic review and Bayesian meta-analysis. European Journal of Nutrition. 2023;62:2027–2037.
- Mozaffarian D. Dairy foods, obesity, and metabolic health: the role of the food matrix compared with single nutrients. Advances in Nutrition. 2019;10(5):917S-923S.
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