Short answer: terahertz in simple words: it is a kind of invisible energy wave that sits between microwaves and infrared on the electromagnetic spectrum, and it is non-ionizing.[3]
Terahertz in simple words: what to know
- Where it sits: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays make up the spectrum.[2] Terahertz lies between microwave and infrared in wavelength.[3]
- Non-ionizing: it does not have enough energy to remove electrons from atoms, unlike X-rays.[1][3]
- Research is young. The authors of a 2014 review wrote that research on the biological effects of terahertz "has only just begun".[3]
- What we say: we describe our devices as using terahertz technology; that description alone does not establish a health benefit, and we don't promise results.[7]
Read our answer on what the research actually says for more detail.
When to see a doctor
See a doctor for any pain or symptom that is severe, getting worse or doesn't settle.
Sources
- CDC, About non-ionizing radiation
- NASA Science, The electromagnetic spectrum
- Zhao L, Hao YH, Peng RY (2014), Advances in the biological effects of terahertz wave radiation, Military Medical Research 1:26
- Prife iTeraCare, How it works
Written by the Prife iTeraCare team and last reviewed on 10 October 2026. This is general information, not medical advice, and it does not replace your doctor or physiotherapist. A session is a wellness experience, not a medical treatment.
Book a free session and see iTeraCare for yourself at our Anna Nagar centre.