Beetroot Benefits for Men: What the Evidence Actually Shows

Beetroot gets talked about a lot in men's health circles, usually with grand claims about erections, blood pressure, and gym performance. Some of the science is genuinely interesting. Some of it is overhyped. This article cuts through both and gives you an honest, evidence-based picture of what beetroot can realistically do for you.

How Beetroot Actually Works in the Body#

Beetroot (Beta vulgaris) is exceptionally rich in dietary nitrates. That's where most of its health effects originate. When you eat or drink beetroot, bacteria on your tongue convert those nitrates into nitrite. Your body then reduces nitrite into nitric oxide, a signalling molecule that relaxes and widens blood vessels.

This process is called the nitrate-nitrite-nitric oxide pathway, and it's well-established in cardiovascular research. The widening of blood vessels (vasodilation) improves blood flow, reduces pressure on the heart, and allows more oxygen to reach working muscles. That's the basic mechanism behind most of the claimed benefits.

Beyond nitrates, beetroot contains betalains (the pigments that make it so vividly red), which have antioxidant and anti-inflammatory properties. These may support cellular health, though the clinical evidence here is less developed than for nitrates.

One nuance worth knowing: this entire pathway depends on oral bacteria. If you use antibacterial mouthwash regularly or have recently taken antibiotics, you may blunt beetroot's nitrate-converting ability significantly. Your mouth microbiome matters more than most people realise when it comes to dietary nitrate supplementation.

Blood Pressure: The Strongest Evidence#

Of all beetroot's claimed benefits, blood pressure reduction has the most robust evidence behind it. Multiple clinical trials and meta-analyses have found that regular beetroot juice consumption can lower systolic blood pressure (the top number) by roughly 2.73 to 4.81 mmHg.

That might sound modest, but in population terms, even a 2 mmHg drop in average systolic pressure is associated with meaningful reductions in stroke and heart attack risk. For men who have mildly elevated blood pressure and are looking to make lifestyle changes alongside medical advice, beetroot is one of the more evidence-backed dietary tools available.

NICE guidelines on hypertension emphasise lifestyle intervention as the foundation of blood pressure management, including dietary changes. Beetroot fits naturally within that framework, not as a replacement for medication, but as a useful adjunct.

Importantly, men who are already on antihypertensive medication should speak to their GP or pharmacist before adding concentrated beetroot supplements to their routine. The blood pressure lowering effects can compound, and while a small reduction sounds harmless, combining multiple agents without supervision can occasionally cause problems.

Exercise Performance: Real but Modest Gains#

Beetroot supplements became genuinely popular in endurance sports several years ago, and there's decent science behind this enthusiasm. Dietary nitrate supplementation, primarily from beetroot juice, has been shown to reduce the oxygen cost of submaximal exercise. Put simply, your muscles work more efficiently with the same amount of oxygen.

For endurance athletes and recreational runners, this can translate to improved time-to-exhaustion and better performance in time trials. The effect tends to be most pronounced in recreational exercisers rather than elite athletes, and in activities lasting between four and thirty minutes.

The typical protocol used in sports research involves 300 to 500ml of beetroot juice (or an equivalent concentrated shot) consumed two to three hours before exercise. Beetroot shots, now widely available from sports nutrition brands in the UK, typically deliver around 400mg of nitrate per dose, which aligns with the amounts used in trials.

British endurance athletes have used dietary nitrate supplementation routinely, and it is worth noting that beetroot is fully compliant with WADA anti-doping rules. It is a food, not a banned substance.

For men who train regularly, beetroot supplementation is probably one of the more evidence-supported natural performance aids available. The effect size is modest but measurable, and the safety profile is good.

Beetroot and Erectile Dysfunction: An Honest Assessment#

This is the claim that attracts the most interest and deserves the most careful explanation.

Nitric oxide is essential for erections. When sexual arousal occurs, nitric oxide triggers the relaxation of smooth muscle in the corpus cavernosum (the erectile tissue of the penis), allowing blood to fill it. Without adequate nitric oxide signalling, this process is impaired. That's actually the mechanism that PDE5 inhibitors like sildenafil and tadalafil exploit: they amplify the nitric oxide signal rather than creating it.

Given that beetroot increases nitric oxide production, it's biologically plausible that it could have some benefit for erectile function. The mechanism is there. However, and this is important, there are no high-quality clinical trials directly testing beetroot juice or extract against erectile dysfunction in men. The evidence that exists is largely mechanistic or observational rather than from well-designed randomised controlled trials.

So the honest answer is: beetroot probably has some mild, indirect benefit for erectile health through improved vascular function, particularly in men whose ED has a strong cardiovascular component. But the effect is almost certainly much smaller than that of licensed ED medications, and there's no reliable trial data to quantify it.

ED is also a condition with many contributing factors, including psychological causes, hormonal issues, and nerve damage, where improved blood flow alone won't make a meaningful difference.

For men who are noticing difficulties and want to address them properly, the evidence base sits firmly with licensed treatments. Sildenafil (the active ingredient in Viagra) and tadalafil (the active ingredient in Cialis) have decades of clinical trial data behind them and work reliably for the majority of men. Totiva's ED treatment service offers a free online consultation with UK-registered clinicians who can assess your situation and recommend an appropriate treatment if it's right for you.

Beetroot and Testosterone: Limited Evidence#

Some men are drawn to beetroot because of claims about testosterone support. The evidence here is weaker than for blood pressure or exercise performance.

There is some preliminary research suggesting that betaine, a compound found in beetroot, may support testosterone levels, and that nitric oxide plays a role in regulating blood flow during sexual arousal in men. However, no clinical trial has demonstrated a meaningful testosterone-boosting effect from beetroot supplementation in humans. The studies that exist are small, methodologically limited, or conducted in animals.

If low testosterone is a genuine concern, it warrants a proper blood test and assessment rather than a dietary supplement. Beetroot may form part of a healthy diet that supports overall hormone health, but it shouldn't be relied upon as a testosterone treatment.

Supplement Forms: Which One Is Worth Using?#

Beetroot is available in several forms, and they're not all equivalent:

Whole beetroot and home-cooked: Nutritious and contains all the plant's compounds, but the nitrate content varies considerably depending on soil type and growing conditions. Roughly 100g of cooked beetroot provides around 100 to 250mg of nitrate.

Beetroot juice: The most widely studied form in clinical research. Doses used in trials typically involve 300 to 500ml of concentrated juice delivering 300 to 500mg of nitrate. Processing can affect betalain content, but nitrate levels are generally preserved.

Concentrated shots (such as Beet-It): These small 70ml shots are designed to deliver a standardised nitrate dose (typically around 400mg) and are convenient for sports use. They're the format most aligned with what research protocols use.

Capsules and powders: Variable quality. Bioavailability of nitrates from dried powders can differ significantly between products. Look for standardised extracts where the nitrate content is specified on the label. In the UK, beetroot supplements are sold as food supplements under FSA rules and are not regulated by the MHRA as medicines, which means quality control can vary between brands.

If you're buying a capsule or powder, check that the product specifies its nitrate content. A product that doesn't isn't necessarily useless, but you can't know what dose you're actually taking.

Drug Interactions and Safety Considerations#

For most healthy men, beetroot in food or supplement form is very safe. But there are some situations that need careful thought:

Blood pressure medications: As discussed, beetroot can lower blood pressure. If you're already on antihypertensives, adding concentrated beetroot supplementation could compound the effect. This isn't necessarily dangerous in modest amounts, but speak to your pharmacist or GP first.

Nitrate medications for angina: This is the most important interaction. Drugs like glyceryl trinitrate (GTN) and isosorbide mononitrate, used to treat angina and heart conditions, work by releasing nitric oxide. Adding high-dose beetroot supplementation on top of nitrate medications could cause an excessive drop in blood pressure. This combination should be discussed with a doctor.

PDE5 inhibitors (sildenafil, tadalafil): The interaction between beetroot and ED medications like sildenafil or tadalafil is less clear-cut than with nitrate drugs. PDE5 inhibitors are not the same as nitrate medications and don't carry the same risk of dangerous blood pressure drops. That said, both sildenafil and tadalafil do lower blood pressure to some degree, so men taking them alongside high-dose beetroot supplementation should be aware of this. The practical risk at normal dietary nitrate levels is likely low, but it's worth mentioning to a clinician.

Beeturia: Roughly 10 to 15% of people notice their urine or stools turn pink or red after eating beetroot. This is harmless and caused by betalain pigments, but it can be startling if you're not expecting it. It doesn't mean anything is wrong.

Kidney stones: Beetroot is relatively high in oxalates. Men with a history of calcium oxalate kidney stones may want to moderate their intake.

Men Over 50: Why Beetroot Matters More With Age#

Nitric oxide production naturally declines with age. After 40, endothelial function (the ability of blood vessel walls to produce and respond to nitric oxide) gradually deteriorates, contributing to increased cardiovascular risk, higher blood pressure, and reduced exercise capacity. This is also part of why ED becomes more common with age.

For men over 50, the potential benefits of dietary nitrate supplementation are arguably more meaningful than for younger men, precisely because baseline nitric oxide availability is lower. Studies in older adults have shown improvements in blood pressure, exercise tolerance, and cognitive blood flow from dietary nitrate supplementation.

This doesn't make beetroot a cure for ageing or ED. But as part of a broader cardiovascular health strategy, including regular exercise, a healthy diet, not smoking, and managing blood pressure, it's a reasonable addition.

Men aged 40 to 74 in England are eligible for a free NHS Health Check, which includes blood pressure, cholesterol, and cardiovascular risk assessment. If you haven't had one recently, it's a useful starting point before making decisions about supplementation.

Putting It All Together#

Here's a straightforward summary of what the evidence actually shows for each claimed benefit:

• Blood pressure reduction: Moderate evidence, clinically meaningful, most consistent finding across studies
• Exercise performance: Moderate evidence, real but modest effect, most useful for recreational athletes
• Erectile function: Biologically plausible, no direct clinical trial evidence, indirect benefit possible through vascular health
• Testosterone support: Weak evidence, not clinically demonstrated in humans
• Antioxidant and anti-inflammatory effects: Preliminary evidence, supportive of general health but not condition-specific

Beetroot is worth including in your diet or supplementing with if you have cardiovascular health goals or are trying to support exercise performance. It is not a substitute for medical treatment for ED, high blood pressure requiring medication, or low testosterone.

If you've been putting off addressing erectile difficulties because it feels awkward to bring up, it's worth knowing that you don't need to sit in a GP waiting room to get help. Totiva offers a free online consultation with UK-registered clinicians, and treatments like sildenafil start from £4.99 for four tablets. You can start a consultation at /start/ed in a few minutes, with no prescription required upfront and discreet delivery to your door.