Restless Legs Syndrome

Restless legs often trace back to brain iron and dopamine signaling. We look upstream at absorption, nutrients, sleep, and nerve health, and calm the sensorimotor system.

What you may be noticing

In the evening, as you sit down or lie in bed, an uncomfortable crawling, pulling, or aching sensation builds in your legs. Moving brings relief, but only for a moment. Sleep is delayed and broken, and your partner may notice your legs jerking through the night.

Your physician should evaluate new or severe symptoms, especially during pregnancy or alongside kidney disease or neuropathy. Never stop or change a prescribed medication on your own.

Why it is rarely one thing

Restless legs syndrome is a neurological sensorimotor condition, not simple fidgeting. Two mechanisms are well established: low iron in the brain and altered dopamine signaling. Iron is a cofactor for the enzyme that makes dopamine, and brain iron can be low even when blood tests look acceptable. Symptoms follow a circadian rhythm, rising in the evening as dopamine activity naturally dips.

The deeper question is why iron is low or poorly delivered. Absorption begins in the gut, so low stomach acid, celiac disease, gut inflammation, and acid-suppressing medication can all limit it, while heavy periods, pregnancy, and blood loss increase need. Peripheral nerve health, blood sugar, kidney function, magnesium, caffeine, alcohol, some antihistamines and antidepressants, and poor sleep all shape symptoms. Some long-term dopamine medications can, over time, shift symptoms earlier in the day, called augmentation, which is worth discussing with your physician.

Lab reference ranges are designed to detect disease. For restless legs, a ferritin that is technically normal can still be low for brain needs, so I read patterns rather than single numbers.

Patterns we look for

• Ferritin and transferrin saturation, read for brain needs rather than only for anemia.
• Causes of low iron: absorption in the gut, heavy periods, celiac disease, and blood loss.
• Magnesium, vitamin D, B12, and folate status.
• Peripheral nerve health and blood sugar regulation.
• Kidney and thyroid function.
• Medications, caffeine, alcohol, and nicotine.
• Sleep quality and coexisting sleep apnea.
• Dopamine signaling, autonomic balance, and evening nervous system state.

How I evaluate it

The comprehensive functional neurological exam assesses sensation, reflexes, vibration sense, strength, coordination, and balance in the legs, looking for neuropathy and for how well the brain is integrating input from the body, along with autonomic responses.

Functional labs may include ferritin, iron, TIBC and transferrin saturation, a complete blood count, magnesium, vitamin D, B12, folate, fasting glucose and HbA1c, kidney function, a thyroid panel, and celiac screening when iron stays low. Intracellular nutrient testing can add depth when serum values look acceptable but symptoms persist.

How we address it

• Identify and correct iron deficiency, coordinating any iron therapy with your physician.
• Restore the gut first, so iron and minerals are absorbed rather than only consumed.
• Review medications that worsen symptoms with your prescriber; never stop one on your own.
• Reduce triggers: caffeine, alcohol, nicotine, and late-evening screens.
• Rebalance magnesium, vitamin D, and B vitamins, and support blood sugar and nerve health.
• Protect sleep, anchor your circadian rhythm with morning light, and screen for sleep apnea.
• Use a calming evening routine: stretching, warm baths, slow nasal breathing, and sensory grounding exercises that give the brain clear, steady input from the legs.

In children, restless legs can be mistaken for growing pains or restlessness, and low ferritin is common; your pediatrician can check iron status.

Brain iron recovers slowly, so improvements often build over weeks to months after ferritin rises. Calm legs and deeper sleep often return together once the chemistry beneath them is restored.

Book your Comprehensive Functional Medicine Eval/Neurological Exam today to discover what the contributing root causes are that are underlying your health concerns.