What Research Reveals About Grounding
Key Studies (Most Cited)
- Biological Effects of Grounding During Sleep (Cortisol, Sleep, Pain, Stress) — 2004 Reduced nighttime cortisol, a tendency toward circadian rhythm normalization, and reported improved sleep quality.
- Grounding Reduces Blood Viscosity — 2013 Increased zeta potential of red blood cells and reduced aggregation (a studied cardiovascular factor).
- One Hour of Contact with the Earth: Inflammation & Blood Flow — 2015 Double-blind randomized pilot trial: improved circulation and signs of inflammation observed through imaging.
- Grounded Sleep & Recovery After Eccentric Muscle Loading — 2019 Faster recovery / less pronounced markers of muscle damage and inflammation.
- Grounding and Sleep Quality (Mild Alzheimer’s) — 2022 Improved sleep quality in patients with mild Alzheimer’s disease (pilot study).
- Review: Reconnecting the Body to the Earth’s Surface Electrons — 2012 Summary of the health implications of grounding (earthing).
Sleep, Stress & Nervous System
- The Biologic Effects of Grounding the Human Body During Sleep… (cortisol) — 2004
- Emotional Stress, Heart Rate Variability, Grounding… — 2011
- The Effect of Grounding the Human Body on Mood — 2015
- Electrical Grounding Improves Vagal Tone in Preterm Infants — 2017
- Grounding the Body Improves Sleep Quality… Mild Alzheimer’s — 2022
- Effects of Grounding on Meditation Quality (preliminary) — 2019
Inflammation, Pain & Muscle Recovery
- Pilot Study: Grounding & Delayed-Onset Muscle Soreness (DOMS) — 2010
- One-Hour Contact… Improves Inflammation and Blood Flow — 2015
- Grounding After Moderate Eccentric Contractions Reduces Muscle Damage — 2015
- Effectiveness of Grounded Sleeping on Recovery after Intensive Eccentric Muscle Loading — 2019
- Grounding on Bodyworkers’ Pain and Quality of Life (RCT) — 2019
- Massage + Grounding for Chronic Low Back Pain (Randomized Trial) — 2021
- Thermography Case Histories — 2004-2005
Blood, circulation & heart
- Earthing Reduces Blood Viscosity — 2013
- Grounded Yoga Mat & blood viscosity — 2015
- Grounding Improves Facial Blood Flow Regulation — 2014
- Blood Urea & Creatinine: grounded vs non-grounded subjects (exercise) — 2013
- Grounding Patients With Hypertension Improves Blood Pressure (case series) — 2018
- Immediate barefoot contact & prehypertension — 2015
Physiology, bioelectricity & mechanisms
- Earthing the Human Body Influences Physiologic Processes — 2011
- Grounding Influences Bioelectrical Processes — 2012
- Physiological changes after 40 min of grounding — 2010
- Conductive patch / bed pad & induced body voltage — 2005
- Body voltage & currents in the presence of EM fields — 2016
- Effect of Earthing on Human Physiology, Part 2 — 2007
- Effect of Earthing on Human Physiology, Part 1 — 2006
Other studies & applications
- Localized grounding + conductive skincare — 2021
- Effects of Grounding on Massage Therapists — 2018
- Classification of EEG Signal for Body Grounding — 2018
- Earthing effects in Lewis Rats — 2010
- Initial experiments (Clint Ober) & historical milestones
Review articles
- Integrative & Lifestyle Medicine Should Include Grounding — 2020
- Grounding, inflammation, immune response, wound healing… — 2015
- Electric Nutrition: Health Benefits of Biological Grounding — 2017
- Health Implications of Reconnecting… Earth’s Surface Electrons — 2012
- Biophysics of Earthing (CRC Press chapter) — 2015
- Grounding – The Universal Anti-Inflammatory Remedy — 2022
Perspectives & clarifications
- Rx Earth – The Original Painkiller (Oschman, Chevalier, Sinatra)
- Understanding Earthing / Grounding
- Can Electrons Act as Antioxidants? (Oschman)
- Complete list & updates — Earthing Institute (research)
For more information: most PDFs and updates are centralized by the Earthing Institute – Research.