03/06/2026
🟡 CAUTION/NUANCE: Pregnancy restless legs is linked to iron deficiency (but don't self-prescribe)
Restless Legs Syndrome (RLS) during pregnancy isn't just "normal discomfort" - and the fix isn't always more sleep.
New evidence shows pregnant women with RLS have significantly lower serum iron levels than unaffected women.
Iron deficiency disrupts the brain pathways that control movement, triggering those unbearable sensations in your legs at night.
But here's the catch:
- Not all iron supplements are equal, and timing matters.
The research recommends checking ferritin levels first - if below 30 mcg/L, oral iron (like ferrous sulfate 65mg daily) is advised.
For severe cases unresponsive to oral iron, IV iron may be considered in the second or third trimester under medical supervision.
The bottom line:
If you're pregnant and struggling with restless legs, ask your GP or midwife to check your iron levels before reaching for over-the-counter supplements.
This study aligns with current RLS treatment guidelines so your GP should be aware - just ensure you're checked against RLS blood iron standards as these differ from typical standards used.
Read the full study 👇
https://read.thebettersleepclinic.com/af0300a1-rls