Sleep Health & Science · Restless Legs

Restless Legs, Syndrome

Restless legs syndrome (RLS) affects an estimated 10% of Canadian adults — irresistible urges to move the legs, worst at night, that disturb sleep. Mattress and bedding choices can't cure RLS but can reduce nighttime triggers. The honest guide to RLS and sleep.

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Questions, Answered

The restless legs questions we actually get asked.

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What causes restless legs syndrome?
RLS is often associated with iron deficiency, kidney disease, pregnancy, or certain medications. Some cases are idiopathic (no identified cause). Family doctors can run iron and ferritin tests; some patients see dramatic improvement with iron supplementation under medical guidance.
Can a new mattress help with RLS?
Mattress quality won't cure RLS but can reduce triggers. Avoid mattresses that trap heat (RLS worsens with overheating) and that compress at the legs (poor circulation triggers symptoms). A cooler, well-supportive mattress helps.
Do weighted blankets help RLS?
Mixed evidence. Deep-pressure stimulation calms the nervous system for some RLS sufferers, but the weight on the legs can also worsen symptoms in others. Try a lighter weighted blanket (10% of body weight) and see if it helps within 4 weeks.
Should I see a doctor about restless legs?
Yes if symptoms occur more than 2 nights a week or significantly disturb sleep. Iron deficiency is the most common reversible cause. The Canadian Sleep Society (css-scs.ca) has RLS resources.
Does magnesium help RLS?
Some evidence supports magnesium glycinate (200-400 mg, taken in the evening) for RLS, especially when associated with leg cramps. Talk to a pharmacist or doctor before long-term supplementation.