Deep dive

Electromagnetic hypersensitivity, read from the primary literature.

EHS describes a pattern of symptoms — headache, fatigue, sleep problems, tinnitus, cognitive difficulty, cardiac reactions — that some people consistently report near electromagnetic sources. Its causation is debated; its lived experience is not.

What the evidence looks like

Provocation studies

Blinded exposure trials often fail to show group-level detection of EMF, but a subset of participants reproducibly reacts to real vs. sham exposure.

Biomarker research

Clinical case series (e.g. Belpomme et al.) report elevated inflammatory and oxidative-stress markers and altered cerebral perfusion in self-diagnosed EHS patients.

Recognition varies

Sweden treats EHS as a functional impairment eligible for accommodations. The WHO classifies it as idiopathic environmental intolerance.

Commonly reported symptoms

· Headache and pressure behind the eyes
· Tinnitus or ear pain
· Insomnia and non-restorative sleep
· Fatigue, brain fog, difficulty concentrating
· Skin sensations — warmth, tingling, rash
· Palpitations, heart-rate irregularities

Symptoms consistent with EHS can also indicate other conditions. Nothing on this page is medical advice — see a qualified clinician for anything that concerns you.

Studies on EHS

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