Narrow-band green light at low brightness, for hours daily or during an attack. Green is reliably the least painful colour during a migraine. Reductions in headache days rest on studies where everyone knew the treatment, rated very low certainty. With frequent attacks, one-time cost and no reported harm tilt the balance toward a bounded trial; brighter light makes headaches worse. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Red blood cell magnesium | 5.5–6.5 mg/dL | Low magnesium is an established, correctable migraine driver |
| 25-hydroxyvitamin D | 40–60 ng/mL | Low status associates with higher attack frequency and poorer sleep |
| Ferritin | 50–100 ng/mL | Iron depletion worsens fatigue and headache burden, especially in menstruating women |
| Homocysteine | Below 8 µmol/L | Elevation flags folate or B-vitamin methylation issues linked to migraine with aura |
| hs-CRP | Below 1.0 mg/L | Screens for the low-grade inflammation that tracks with progression to chronic migraine |
| Thyroid-stimulating hormone | 0.5–2.0 mIU/L | Both under- and over-active thyroid states present with headache and disturbed sleep |
| Overnight urinary 6-sulfatoxymelatonin | No established target; track change from own baseline before and after 6 weeks of evening sessions | Detects whether late sessions are suppressing night-time melatonin |
Cadence: Baseline panel drawn before the first session, repeated at 3 months, then every 6–12 months, with any corrected marker rechecked sooner. Headache diary scored continuously and formally reviewed at 4 weeks, 10 weeks, and every 3 months thereafter.