In 40 seconds
PEMF therapy is dose-dependent — different frequencies (Hz) produce different effects. The most-used range in clinical practice is 0.5 Hz to 30 Hz. Lower frequencies (delta range, 0.5–4 Hz) suit sleep, deep tissue repair, and bone healing. Mid-range (alpha, 8–14 Hz, including the famous 7.83 Hz Schumann resonance) suits relaxation, anxiety, and general wellness. Higher frequencies (beta, 14–30 Hz) target inflammation and acute pain. Most clinical protocols stack multiple frequencies in a single session.
Quick facts
- Delta (0.5–4 Hz): Sleep, bone healing, deep tissue repair
- Theta (4–8 Hz): Meditation, relaxation, sleep onset
- Alpha (8–14 Hz): Relaxation, anxiety, general wellness
- Schumann (7.83 Hz): Earth resonance, calming, circadian
- Beta (14–30 Hz): Inflammation, acute pain, alertness
- Higher (30+ Hz): Specialised protocols only
Frequency reference table
| Frequency | Wave band | Best for |
|---|---|---|
| 0.5–3 Hz | Delta | Deep sleep, bone healing, fracture repair, severe chronic pain |
| 3–7 Hz | Theta | Sleep onset, meditation, anxiety, deep relaxation |
| 7.83 Hz | Schumann | Earth resonance — calming, circadian alignment, general wellness |
| 8–14 Hz | Alpha | Stress, mood, light relaxation, general health |
| 14–30 Hz | Beta | Acute inflammation, pain, alertness, focus |
| 30 Hz+ | Gamma+ | Specialised protocols — used carefully |
Contraindications
Standard PEMF contraindications: pacemakers, defibrillators, cochlear implants, insulin pumps, electronic implants; active malignancy without specialist clearance; pregnancy (over the abdomen); active infection; epilepsy without GP clearance.
Frequently asked questions
What's the best frequency for knee osteoarthritis?
Most clinical protocols use a mix — typically a foundation in the alpha range (8–14 Hz) plus targeted lower-frequency (delta, 0.5–4 Hz) for deeper joint and bone effects.
What about for sleep?
Delta (0.5–3 Hz) and theta (3–7 Hz) ranges. Many sleep protocols centre around 7.83 Hz (Schumann).
Is one frequency 'best'?
No — the right frequency depends on what you're treating. That's why clinical-grade PEMF systems offer multiple programmes, while simple home mats often run a single fixed frequency.
What's the Schumann resonance?
Earth's natural electromagnetic resonance — about 7.83 Hz. Some research suggests human biology has evolved alongside this frequency, which is why it's commonly used in calming and wellness PEMF protocols.
Looking for a PEMF clinic near you?
We list every credible PEMF therapy provider in the UK so you can find one near home.