Are grounding sheets safe?

What actually happens at the outlet, what is known about EMF, who should check with a doctor first, and what to do when a storm rolls in.

October 9, 2026 8 min read

A grounding sheet asks you to do something that sounds odd: sleep on fabric that is wired to a wall outlet. It is reasonable to ask whether that is safe. The short answer is that a correctly made sheet on a correctly wired outlet does not connect you to household power. The longer answer has a few conditions worth knowing, and they are mostly about the outlet, your health history, and the weather.

Key points

On a correctly wired outlet, a grounding cord uses only the ground port and doesn't connect you to household power.
Faulty wiring is the main electrical risk: test the outlet, and contact a licensed electrician if it shows a fault.
We know of no independent research on whether grounding sheets change EMF exposure; treat claims either way cautiously.
Talk to a doctor first if you have an implanted device, are pregnant or take blood thinners; unplug during storms.

Does the cord touch live electricity?

No, not in a correctly wired outlet. A US outlet has three openings. The two flat slots carry power. The round hole below them is the ground, a safety path back to your electrical panel and the earth that normally carries no current. A grounding cord uses only that round port. On the Equilibrium Grounding Fitted Sheet, the single cord plugs into the ground port and nothing else, and the sheet does not draw power.

The important words are "correctly wired." If an outlet's wiring is faulty, for example if the hot and ground wires have been swapped, the ground port itself could be energized. That is rare, but it is the main electrical risk with any grounding product, and it is easy to check for. A plug-in outlet tester shows within seconds whether the ground is connected and whether the wires are in the right places. They cost a few dollars at any hardware store, and our guide to checking your outlet's ground explains what the lights mean. If the tester shows any fault, use a different outlet and contact a licensed electrician.

What about resistors in the cord?

Many grounding cords on the market include a built-in resistor. Earthing, one of the larger US grounding brands, says all of its cords contain a 100,000-ohm current-limiting resistor, intended to keep current low if a fault ever reached the ground line. The same idea is used in the grounding cords electronics workers wear to control static, where a resistor (commonly about one million ohms) is built in to limit current if the wearer touches a live conductor.

A resistor is a sensible safeguard, but it isn't a substitute for a properly wired outlet. Testing the outlet comes first either way.

Other appliances nearby

In a 2024 Healthline review of grounding mats, nurse researcher Debra Rose Wilson pointed to a second, less obvious risk: drawing current from other sources while grounded. If you are connected to ground and touch a faulty, ungrounded appliance, you could become part of a circuit. The practical advice is ordinary electrical sense. Keep damaged cords, lamps and devices away from the bed, and replace a grounding cord that is cracked, crushed or frayed.

EMF and "dirty electricity": what is actually known

Some shoppers worry that a wire running to the outlet could act like an antenna, carrying electromagnetic fields (EMF) or "dirty electricity" from household wiring into the bed. It helps to separate what has been studied from what hasn't.

Household wiring and appliances produce extremely low frequency (ELF) electric and magnetic fields. The World Health Organization's review of ELF fields concluded there are no substantive health issues from ELF electric fields at the levels the public usually encounters. For ELF magnetic fields, the International Agency for Research on Cancer classified them in 2002 as "possibly carcinogenic to humans," based on a statistical association with childhood leukemia at higher-than-typical home exposures. WHO considers that evidence too weak to show cause and effect, noting problems with the studies, no accepted biological mechanism, and largely negative animal research. The US National Institute of Environmental Health Sciences (NIEHS) says scientists don't know for sure whether some kinds of EMF cause harm.

"Dirty electricity" refers to high-frequency voltage spikes on household wiring. A 2016 systematic review in Frontiers in Public Health by Frank de Vocht and Robert Olsen found only 25 relevant publications and concluded that the evidence for dirty electricity affecting human health "does not stand up to scientific scrutiny." The review also found that the widely quoted safety threshold used by meter sellers appears arbitrary.

We are not aware of independent research measuring whether grounding sheets increase or reduce anyone's EMF exposure. Claims in either direction should be treated with caution, including claims from grounding brands.

A resistor is a sensible safeguard, but it isn't a substitute for a properly wired outlet.

Who should talk to a doctor first

Grounding products are not medical devices, but there are groups who should check with a clinician before using one.

People with implanted medical devices, such as pacemakers, defibrillators or insulin pumps. There is little research here, so ask your cardiologist or device clinic.
People who are pregnant. We found no studies of grounding during pregnancy, which is a reason to ask your obstetrician rather than a reason for alarm.
People who take blood thinners such as warfarin. A small 2013 study in the Journal of Alternative and Complementary Medicine (Chevalier and colleagues) grounded 10 healthy adults for two hours and reported changes in red blood cell charge and clumping, which the authors interpreted as reduced blood viscosity. The study was tiny and did not measure viscosity directly. A 2012 review by the same research group in the Journal of Environmental and Public Health advised that combining grounding with warfarin should be supervised by a physician, citing anecdotal reports. Several of those authors disclosed that they were contractors for a company that sponsors grounding research.
People on other regular medication, including thyroid medication, which the same 2012 review mentioned in anecdotal reports. If you take something that is closely monitored, tell your doctor what you plan to try.

None of this shows that grounding is harmful for these groups. It shows that the research is thin, and a short conversation with your doctor is the sensible step. For a fuller look at what the studies did and didn't find, see our overview of grounding research.

Skin and hygiene

Grounding sheets conduct because they contain metal fiber, usually silver. Equilibrium sheets are GOTS certified organic cotton with conductive silver fiber woven in. A 2018 review in Regulatory Toxicology and Pharmacology (Hadrup, Sharma and Löschner) found that intact skin is an effective barrier against silver absorption, that silver has a low potential for skin irritation, and that some cases of allergic contact dermatitis have been reported. If you have a known metal allergy or broken skin, ask a dermatologist.

For hygiene, treat a grounding sheet like any other sheet, with a few care differences. Wash it weekly or at least every two weeks, in cold water with mild detergent, and skip fabric softener, bleach and dryer sheets, which can coat the silver fiber. Our article on washing grounding sheets covers the details.

From the Equilibrium collectionEquilibrium Grounding Fitted SheetGOTS certified organic cotton with conductive silver fiber woven in; one cord to the ground port, conductivity tester included.View product

Kids, pets and thunderstorms

Children. We know of no research on grounding products in children. If you are considering one for a child, ask their pediatrician, and remember that any cord near a bed is a tangle and trip hazard for small kids.

Pets. The main risk is the cord itself. Dogs and cats that chew can damage it, so route the cord out of reach and check it regularly. A chewed cord should be replaced; Velin sells a replacement grounding cord separately.

Thunderstorms. Lightning can travel through a building's electrical system. The CDC advises not using anything connected to an electrical outlet during a thunderstorm. Grounding brands commonly give similar advice: Earthing, for example, tells customers who are concerned to disconnect their products during lightning storms. We suggest the same precaution. If a storm is coming, unplug the cord from the outlet, and plug it back in once the storm has passed.

The honest bottom line

On a correctly wired, tested outlet, a well-made grounding sheet connects you only to the ground path, not to household power. The real risks are practical ones: faulty wiring, damaged cords, and storms. All three are manageable with a tester, a quick look at the cord, and unplugging when lightning is around.

The health questions are less settled. Research on grounding is small, often funded by people with ties to the industry, and not strong enough to support health claims either way. If you have an implanted device, are pregnant or take blood thinners, talk to your doctor first. If you have more questions about how our sheets work, our FAQ is a good place to start.

Sources

This article is for general information and isn't medical advice. Individual results vary.