Does Grounding Lower Blood Pressure? What the Research Actually Shows

Quick Answer

Does grounding lower blood pressure? Early research suggests it may help modestly for some people, but the evidence is still limited and far from conclusive. A handful of small studies have reported lower systolic and diastolic blood pressure readings among people who practiced grounding regularly. These results are interesting, yet they come from small groups studied over short timeframes. Grounding may complement a heart-healthy lifestyle, but it is not a replacement for prescribed treatment.

What Is Grounding (Earthing)?

Grounding, also called earthing, is the practice of electrically connecting your body to the Earth. The concept is straightforward: the planet's surface carries a subtle negative charge, and supporters of grounding believe that connecting to it allows free electrons to enter the body.

There are two common ways to do it:

• Outdoor grounding: walking barefoot on grass, soil, sand, or stone, or sitting or lying directly on the ground.
• Indoor grounding: using conductive products such as a grounding mat that connects to the Earth through a dedicated grounding rod or a properly wired electrical outlet, allowing you to stay connected while you sleep, work, or relax.

Most modern lifestyles keep us insulated from the Earth. Rubber-soled shoes, raised floors, and indoor living all reduce direct contact. Grounding aims to restore that connection, and researchers have begun studying whether it produces measurable physical effects, including on blood pressure.

One detail many articles skip: grounding indoors through standard wiring can also expose you to electrical noise, sometimes called "dirty electricity." Peak Grounding's grounding filters are designed to address this by blocking unwanted alternating current while allowing the natural low-frequency signals through. You can read more about why this matters in the Grounding 101 guide.

How Grounding Could Affect Blood Pressure

Researchers have proposed several mechanisms that could explain the link between grounding and blood pressure. These are working theories, not settled science.

• A calmer nervous system. Grounding may shift the body toward parasympathetic ("rest and digest") activity, which is associated with relaxation.
• More balanced cortisol. Some studies have observed shifts in the stress hormone cortisol after grounding. Chronic stress is a recognized contributor to high blood pressure.
• Reduced inflammation. Inflammation is involved in cardiovascular disease, and grounding has been investigated for potential anti-inflammatory effects.
• Improved blood flow. One study suggested that grounding can reduce blood viscosity, allowing blood to flow more easily.
• Better sleep. Poor sleep is linked to higher blood pressure, and improved sleep is one of the most frequently reported effects of grounding.

These pathways are plausible, but showing that they translate into meaningful blood pressure changes requires larger, more rigorous research.

What the Research Says About Whether Grounding Lowers Blood Pressure

So, does grounding help lower blood pressure according to actual studies? Here is an honest look at the evidence available so far. You can explore the primary sources in Peak Grounding's grounding research library.

The Elkin and Winter case series (2018)

This is the study most often cited on this topic. Integrative cardiologist Howard Elkin, MD, monitored 10 hypertensive patients who grounded themselves at home for 10 to 12 hours per day, using conductive bedding at night and a grounding mat during the day, over several months. Blood pressure was measured at baseline and at follow-up appointments. All ten patients showed lower systolic readings, with reductions ranging from about 8.6% to 22.7%. The authors were careful to call it a preliminary case series and stressed that larger, controlled studies are needed.

The Chevalier blood viscosity study (2013)

This research did not measure blood pressure directly. Instead, it found that grounding increased the electrical charge on red blood cells, reducing their tendency to clump and lowering blood viscosity. Since thicker blood is a recognized cardiovascular risk factor, this study is often referenced when discussing grounding's possible heart-related effects, though it does not demonstrate a blood pressure benefit on its own.

Grounding during pregnancy

A separate small study explored barefoot earthing as a lifestyle approach for managing high blood pressure in pregnant women and reported reductions in both systolic and diastolic readings. As with the other research, the participant group was small.

A 2025 study in older adults

More recently, researchers studied grounding in 32 elderly individuals with hypertension. Participants grounded three times a week for 30 minutes over three weeks. The average systolic blood pressure dropped by about 7.81 mmHg and diastolic by about 2.66 mmHg. It is worth noting this used a pre-experimental design with no control group, so the results, while measurable, cannot rule out other influences.

Study Comparison at a Glance

The Honest Limitations

Balanced reporting matters, especially for a health topic. The current evidence has real weaknesses worth knowing before drawing conclusions.

• Small sample sizes. Most studies involved a few dozen people or fewer. Findings from small groups do not always hold up in larger populations.
• Short study periods. Many lasted only a few weeks or months, so the long-term effects remain unknown.
• Few large, randomized controlled trials. The gold standard of medical research is largely missing for this specific question.
• Uncontrolled designs. Several of the most-cited studies, including the Elkin case series and the 2025 elderly study, lacked control groups, which makes it harder to separate grounding's effect from other factors.
• Possible placebo effect. Relaxation, expectation, and the simple act of resting can influence blood pressure on their own.
• Limited replication. The most-cited results have not yet been widely reproduced by independent teams.

In short, the research points in a hopeful direction, but it is not strong enough to claim that grounding reliably lowers blood pressure for everyone.

Grounding Mats and Indoor Grounding for Consistency

A common question is whether indoor products work as well as walking barefoot outdoors. Most studies used a mix of outdoor grounding and conductive indoor products, so the two are often studied together rather than compared head-to-head.

Indoor grounding products are designed to make consistency easier. Many people cannot walk barefoot outside every day due to the weather, climate, or schedule. A Peak Grounding mat is designed to keep you connected during the hours you are already resting or working, making a daily grounding habit more realistic. Consistency appears to matter in the research, since the reported benefits came from regular practice rather than occasional sessions.

If you ground indoors, the quality of your connection matters too. Connecting through household wiring can introduce electrical noise. Pairing a mat with a grounding filter is one way to reduce that noise, and Peak Grounding's product bundles combine a filter, mat, and copper rod for a complete setup. These are convenience and comfort tools, not medical devices, and should be viewed as part of a broader heart-healthy routine.

How to Try Grounding Safely

If you want to explore grounding, here is a simple, low-risk approach.

• Start outdoors when you can. Aim for around 30 minutes a day of barefoot contact with grass, soil, or sand.
• Use indoor products for consistency. A grounding mat can help you stay grounded while you sleep or work, especially during colder months. See the setup guide for how to connect everything correctly.
• Track your numbers. Use a home blood pressure monitor and record readings at the same time each day so you can see real trends rather than guessing.
• Be patient. In the studies that reported benefits, results developed over weeks of regular practice.
• Keep the rest of your routine strong. Grounding works best alongside good sleep, regular movement, a balanced diet, and stress management.

Who Should Be Cautious

Grounding is generally considered low risk, but a few groups should take extra care.

• If you take blood pressure medication, talk with your doctor before starting. If grounding affects your readings, your prescribed dose may need to be monitored. Never change or stop medication on your own.
• If you take blood thinners or have a heart condition, discuss grounding with your healthcare provider first.
• Track your readings at home and share your findings with your doctor, especially during the first few weeks.
• See a professional if you notice anything unusual, or if your blood pressure is not under control.

Grounding should support your care plan, not replace it.

Frequently Asked Questions

Can Earthing Lower Blood Pressure?

Earthing and grounding are the same practice. Small studies suggest earthing may help lower blood pressure for some people, but the evidence is limited and not yet conclusive.

Do Grounding Mats Lower Blood Pressure?

Grounding mats are used in much of the research alongside other grounding methods. They may help by making daily practice consistent, but a mat alone is not a guaranteed way to lower high blood pressure.

How Long Does Grounding Take To Affect Blood Pressure?

In studies that reported improvements, changes appeared over several weeks of regular grounding rather than after a single session.

Is Grounding Safe If I Have Hypertension?

For most people, grounding is low risk. If you take blood pressure medication, check with your doctor first so any changes in your readings can be monitored.

Is Grounding a Proven Treatment for High Blood Pressure?

No. Grounding is not a proven medical treatment or cure. It should not replace medical care, but it may be a useful addition to a healthy lifestyle.

Key Takeaways

So, does grounding lower blood pressure? The honest answer is that early research is encouraging but far from definitive. Several small studies have reported lower readings in people who regularly ground, and there are reasonable theories for why it could help, including reduced stress, more balanced cortisol levels, and improved circulation. At the same time, the studies are small, short, often uncontrolled, and rarely replicated.

If you are curious, grounding is a simple and accessible habit to add to a heart-healthy lifestyle. Whether you walk barefoot outdoors or use a Peak Grounding mat and filter for consistency, the smartest approach is to track your readings, stay patient, and keep your doctor involved in any decisions about managing your blood pressure.

References

• Elkin, H. K., & Winter, A. (2018). Grounding Patients With Hypertension Improves Blood Pressure: A Case History Series Study. Alternative Therapies in Health and Medicine, 24(6), 46–50.
• Chevalier, G., et al. (2013). Earthing (Grounding) the Human Body Reduces Blood Viscosity—a Major Factor in Cardiovascular Disease. Journal of Alternative and Complementary Medicine.
• Earthing Method as Lifestyle Medicine to Reduce Hypertension in Pregnancy. (Research study.)
• Grounding Activities Effectively Lower Blood Pressure in Elderly People With Hypertension. (2025). Nursing and Health Sciences Journal.