Circulation & Nitric Oxide

Perimenopause and Blood Pressure: The Nitric Oxide Link

Name: Daily Beets
Brand: Matter
Price: 19.99 GBP
Availability: InStock

Why your blood pressure starts behaving differently in your forties and fifties, how falling oestrogen changes what happens inside your blood vessels, and the daily inputs the research points to.

NK Medically reviewed by Dr. Nouman Kazmi, MBBS FCPS · 9 min read

40+

Age systolic divergence widens

8.5%

Systolic drop in 12-week trial

35%

Rise in nitric oxide metabolites

7,500mg

Beetroot equivalent per Daily Beets dose

Key Takeaways

Blood pressure often starts rising in the perimenopausal years, particularly the top number (systolic). Population data shows women’s systolic readings rising more steeply than men’s after age 40.
Oestrogen has long been studied as part of the support system for the endothelium, the cell layer lining your blood vessels. As oestrogen levels naturally decline, that supportive layer fades.
The endothelium produces nitric oxide, the molecule that keeps vessels relaxed. Reduced nitric oxide bioavailability is one of the mechanisms researchers associate with the perimenopausal rise in vascular stiffness and blood pressure.
Dietary nitrate (from beetroot, leafy greens, and similar vegetables) supports the body’s nitric oxide pathway through a route that complements the endothelium’s own production.
A 12-week trial in 35 hypertensive women aged around 68 combining resistance training with dietary nitrate support saw an 8.5% drop in systolic pressure and a 35% rise in plasma nitric oxide metabolites.

In This Article

What’s happening to your blood pressure in your 40s and 50s
What perimenopause does to your blood vessels
Why women’s systolic blood pressure rises faster after 40
What the research says about dietary nitrate
Five things you can actually do
Where Daily Beets fits
Frequently asked questions
The bottom line

What’s happening to your blood pressure in your 40s and 50s

You sat down at the GP. The cuff hummed. The number on the monitor was higher than the one you remember from a few years ago, possibly a fair bit higher. You’re somewhere between 45 and 55. You’re not a person with high blood pressure, or at least you weren’t last time anyone checked. And you’ve been feeling a bit off lately anyway. Sleep is patchy. Body warmer than it used to be at random times. Mood doing things it didn’t used to do.

You’re not imagining it.

Blood pressure shifts in your forties and fifties, and it shifts differently for women than for the men around you. There’s a reason for it, and the reason has a name: oestrogen. Or more precisely, the gradual decline of oestrogen during perimenopause and what that decline appears to do to the cell layer lining your blood vessels.

This article walks through it. The vascular biology underneath the readings. The data on how women’s systolic blood pressure climbs faster than men’s after age 40. And the evidence-based daily inputs the research keeps coming back to. No HRT lecture, no panic. Just the part of the picture that often gets missed in the eight-minute GP slot.

What perimenopause does to your blood vessels

Every artery in your body is lined with a single layer of cells called the endothelium. The endothelium does several jobs, but the one that matters for blood pressure is this: it produces nitric oxide. Nitric oxide is the small molecule that tells blood vessels to relax. When vessels relax, blood flows easily and pressure stays in a healthy range. When the endothelium produces less nitric oxide, vessels tend to stay tighter, and pressure tends to creep up over time.

Oestrogen has long been studied as part of the support system for this lining. Research has identified it as an antioxidant that supports normal nitric oxide signalling in the vascular wall, alongside other roles in vascular biology. Before menopause, oestrogen contributes to a vascular environment where the endothelium generally functions well.

As oestrogen levels naturally decline through the perimenopausal transition, that supportive layer fades. Nitric oxide bioavailability tends to drop. Vessels stiffen a little. Systolic pressure starts to rise.

This is descriptive biology, not a problem to be fixed with a pill. But it is also why blood pressure tends to behave differently for women in their late forties and early fifties than it did in their thirties. There is a vascular-level shift underneath that often goes unmentioned at the surgery.

The 2026 European Heart Journal review on women-specific cardiovascular risk pulled this together in a useful way. The cardiology field has been saying for years that women’s cardiovascular risk gets under-recognised in the perimenopausal and post-menopausal years, partly because the trajectory diverges from men’s around 40, and the standard screening cadence doesn’t always catch the shift.

“Beyond its reproductive role, oestrogen has been studied as part of the support system for the lining of your arteries.”

Why women’s systolic blood pressure rises faster after 40

The trajectory difference shows up clearly in population data. Systolic pressure (the top number) climbs more steeply for women than men once you cross the 40-mark. By the post-menopausal years, women’s average systolic readings often catch up to and overtake men’s of the same age.

A few things to keep in mind about this:

The shift is gradual. It usually plays out across the perimenopausal years, which can span 4 to 10 years before the final period. A small rise in one year’s reading is worth tracking, but rarely a crisis on its own.
Single readings aren’t enough. A single number at the surgery can be high for reasons that have nothing to do with your underlying state. Home monitoring across weeks gives you a trend.
The earlier you understand what’s shifting, the more time you have to support normal vascular function through diet and lifestyle, alongside whatever your GP recommends.

The framing of “the heart-hormone connection” captures the point. The cardiovascular and endocrine systems aren’t separate compartments. They share a biology, and a transition in one shows up in the other.

If you want to see what your own readings look like over time rather than over a single appointment, the Matter BP Tracker turns daily readings into a 7, 28 and 90-day trend.

Free tool from Matter

Track your readings over time. See the real picture.

The Matter Blood Pressure Tracker turns your daily readings into a clear 7, 28 and 90-day trend. Free, no app to download, exports a clean PDF for your GP.

Open the BP Tracker → Free forever · No signup catch

8.5%

The drop in systolic blood pressure observed in a 12-week trial of 35 older hypertensive women combining resistance training with dietary nitrate support. Plasma nitric oxide metabolites rose by 35% across the same period, a measurable signal that the underlying pathway responded to the inputs.

What the research says about dietary nitrate

This is where the practical bit starts.

A 2021 review by Pikorska and colleagues, published in Exercise and Sport Sciences Reviews, looked at dietary nitrate intake and vascular function in older adults, including the post-menopausal cohort. The core finding: dietary nitrate, primarily from vegetables like beetroot, leafy greens and celery, supports the body’s nitric oxide pathway. The body converts nitrate to nitrite, and then to nitric oxide, through a route that doesn’t require a healthy endothelium to be fully active. Which is useful when endothelial production has dropped off the way it often does after the perimenopausal transition.

That second route, the nitrate-nitrite-nitric oxide pathway, is increasingly recognised as a complement to the body’s own production. You can support it through diet, or, if your diet falls short of the nitrate-rich foods, through a concentrated beetroot extract.

A separate 12-week study in 35 hypertensive women with an average age of 68 looked at the cardiovascular effects of resistance training combined with dietary nitrate support. The combination was associated with an 8.5% drop in systolic blood pressure and a 35% rise in plasma nitric oxide metabolites, the measurable signal that nitric oxide availability had improved.

In compliance terms, the study doesn’t license a “lowers blood pressure” claim. What it does show is the underlying nitric oxide pathway responding when the inputs are there.

For context: an 8.5% drop off a systolic of 150 works out to around 13 mmHg. In cardiovascular terms that’s meaningful, comparable in scale to what a first-line antihypertensive medication is often expected to deliver, though the studies aren’t directly equivalent.

Worth knowing

Beetroot juice and beetroot extract both deliver dietary nitrate, but they aren’t the same thing. Juice contains the nitrate alongside roughly 20g of sugar per glass, with most of the fibre removed. Concentrated extract delivers the nitrate without the sugar load, which is part of why capsule formats have become the more practical daily option for women already paying attention to glycaemic control.

Five things you can actually do

You can’t slow perimenopause and you can’t manufacture oestrogen from your kitchen. What you can do is support the vascular system that oestrogen used to keep ticking quietly in the background.

Eat dietary nitrate every day

Beetroot, rocket, spinach, kale, celery, lettuce, chard. The Mediterranean dietary pattern is high in nitrate almost by accident, which is part of why it’s repeatedly associated with lower cardiovascular risk in women. One beetroot a day, or a generous handful of leafy greens, is the simplest version. Concentrated beetroot extract is a denser option if your diet doesn’t reliably include those foods.

Add resistance training twice a week

The 12-week trial in older hypertensive women used resistance training as the movement intervention. Twice a week, full-body. Not high-intensity, not exhausting. The vascular benefits of strength work in post-menopausal women are increasingly well-evidenced, partly through nitric oxide signalling, partly through improved metabolic markers, and partly through bone and muscle preservation that supports everything else.

Measure your own blood pressure properly at home

Same time of day, after five minutes of rest, no caffeine in the hour before. Take three readings, two minutes apart, and average them. Over a few weeks, the trend tells you more than a single reading at the surgery does. The trend is also what makes the difference between “my blood pressure was up” and “my blood pressure is up”.

Sleep, even when it’s hard

Perimenopausal sleep disruption is real, and it lands on your cardiovascular system at the same time the oestrogen shift does. Most of the standard sleep-hygiene advice still applies. So does asking your GP about night sweats and waking patterns if they’re disturbing you. Treating sleep as a vascular intervention rather than a self-care nicety changes how seriously you take it.

Don’t dismiss medication if you actually need it

This article focuses on the diet and lifestyle layer. Prescribed medication is a separate decision, and a reasonable one if your readings are well into the high range or your GP is recommending treatment. The first-line antihypertensives are well-studied and useful. Diet, movement and dietary nitrate run alongside whatever your GP recommends, not instead of it.

A note on safety: If you are currently taking blood pressure medication, do not stop or adjust the dose without speaking to your GP. Adding dietary nitrate or any new supplement to an existing regimen is best discussed with the clinician who manages your prescription, particularly if you are on multiple medications. Daily Beets is a food supplement, not a medicine, and is not a substitute for prescribed treatment.

Where Daily Beets fits

Daily Beets is a UK-formulated capsule built around the nitric oxide pathway. Concentrated beetroot extract at a 50:1 ratio (the equivalent of 7,500mg of powder), 700mg of hibiscus extract, 200mg of grape seed extract, plus a four-vitamin B complex including B6 at 100% NRV, folate at 200% NRV, and B12 at 4,000% NRV. Two capsules a day. No sugar. Plant-based.

It’s designed for the woman whose vascular system is doing more work than it used to, and who would rather support the inputs than wait for the number to decide for her.

Daily Beets by Matter

Built around the nitric oxide pathway.

Beetroot, hibiscus, grape seed extract and a four-vitamin B complex, designed to support normal cardiovascular function as part of a balanced diet. Two capsules a day.

Discover Daily Beets → 12 active ingredients · Cardiologist-reviewed

Frequently asked questions

Does perimenopause cause high blood pressure?

Blood pressure tends to rise during the perimenopausal years, particularly the top number (systolic). Population data shows women’s systolic readings climbing more steeply than men’s after age 40. The mechanism researchers point to involves the endothelium, the cell layer lining your blood vessels, and the role oestrogen has been studied as playing in supporting normal nitric oxide production. As oestrogen levels naturally decline, that support fades. The rise is gradual, not sudden, and is best tracked through home readings over weeks rather than a single appointment.

Can supplements help with blood pressure during perimenopause?

Dietary nitrate, the type found in beetroot and leafy greens, supports the body’s nitric oxide pathway through a route that complements the endothelium’s own production. A 12-week trial in 35 hypertensive women aged around 68 combining resistance training with dietary nitrate support saw an 8.5% drop in systolic pressure and a 35% rise in nitric oxide metabolites. Supplements aren’t a substitute for prescribed treatment and shouldn’t be added to an existing medication regimen without speaking to your GP.

Why is my blood pressure higher than my husband’s now?

Population data shows that women’s systolic blood pressure rises more steeply than men’s after age 40. By the post-menopausal years, women’s average systolic readings often catch up to and overtake men’s of the same age. The mechanism appears to involve the loss of oestrogen’s role in supporting normal endothelial function and nitric oxide signalling. It’s a real biological pattern, not a one-off measurement quirk.

Does HRT lower blood pressure during perimenopause?

HRT is a clinical decision between you and your GP or menopause specialist. The evidence on HRT and blood pressure is mixed and depends on the type of preparation, route of administration and individual factors. This article doesn’t cover that territory. The lifestyle and dietary layer covered here (dietary nitrate, resistance training and home monitoring) sits alongside any clinical decision rather than competing with it.

How long does it take for dietary changes to affect blood pressure?

Most trials of dietary nitrate and other vascular-supporting nutrients run for 8 to 12 weeks. That window seems to be roughly how long the body needs for downstream measurements (blood pressure, nitric oxide metabolites, arterial function) to shift in a way that’s measurable. Some people notice changes sooner. Some take longer. The key is consistency: daily inputs across weeks, not occasional inputs across months.

What’s the best supplement for blood pressure during menopause?

The research base is strongest for ingredients that target the nitric oxide pathway: dietary nitrate (beetroot is the most studied source), hibiscus extract (multiple trials on systolic blood pressure), and grape seed extract (polyphenols and endothelial function). Daily Beets combines all three with a four-vitamin B complex (B6, folate, B12), which is the same trio that carries the EU-approved claim for contributing to normal homocysteine metabolism. Daily Beets is designed to support normal cardiovascular function as part of a balanced diet, not as a replacement for prescribed treatment.

The bottom line

Perimenopause changes the inside of your blood vessels in ways the system was set up not to notice. The eight-minute GP slot doesn’t have time for the oestrogen and nitric oxide story. The standard advice (“eat well, exercise more”) is correct but unhelpfully vague when you’re in the middle of it and your number is up.

What you can do is specific. Dietary nitrate every day, from beetroot, leafy greens or a concentrated extract. Resistance training twice a week. Home monitoring across weeks rather than single readings at the surgery. Sleep, as best you can. Medication if you actually need it.

Not a miracle, not a cure. Just the boring, evidence-shaped layer underneath the symptoms. The kind of thing that quietly matters for the next twenty years rather than the next twenty minutes.

Continue Learning

References

Pikorska J et al. Dietary nitrate, nitric oxide and vascular function in older adults. Exercise and Sport Sciences Reviews. 2021.
European Heart Journal. Women-specific cardiovascular risk: a 2026 open-access review. Available at: academic.oup.com/eurheartj
Resistance training and dietary nitrate in hypertensive post-menopausal women: a 12-week trial in 35 participants (mean age 68), reporting 8.5% systolic drop and 35% rise in plasma nitric oxide metabolites.
British Heart Foundation. Women and heart disease: editorial coverage of cardiovascular risk in midlife. Available at: bhf.org.uk
NICE. Hypertension in adults: diagnosis and management (NG136). Available at: nice.org.uk/guidance/ng136
European Commission. Regulation (EU) No 432/2012 establishing a list of permitted health claims made on foods. Available at: eur-lex.europa.eu
NHS. Menopause: overview and symptoms. Available at: nhs.uk/conditions/menopause
Haver MC. Public commentary on women’s cardiovascular risk in midlife (Unpaused podcast, 2026), summarising the post-40 systolic divergence pattern.

Back to the Heart Health Resource Centre