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  • With Mayo Clinic nutritionists

    Jennifer Nelson, M.S., R.D. and Katherine Zeratsky, R.D.

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  • Nutrition-wise blog

  • Jan. 30, 2013

    Restless legs and iron deficiency in children

    By Jennifer Nelson, M.S., R.D. and Katherine Zeratsky, R.D.

5 comments posted

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My children were never what you might call good sleepers as babies. But for one of my sons, the sleep issues continued into his toddler years. However, his midnight visits weren't accompanied by the usual request, "Mommy, can I sleep with you?"

Instead, my son would come to me out of sorts after flopping around in bed like a fish out of water and complain, "Mommy, my body hurts."

So, began the long climb out of iron deficiency.

Iron deficiency is strongly associated with restless leg syndrome in children. And restless leg in children is often underdiagnosed, passed over as growing pains. Another risk factor is family history. Thinking back, yes, there were nights during my pregnancies that I jumped out of bed to ease my restless legs. Iron deficiency can also be a result of celiac and other diseases. Fortunately, that isn't the case for my son.

My toddler started an iron supplement and it helped him sleep. Although doctors and pharmacists alike warned me that I'd struggle to get him to take it, I didn't and still don't.

It's two years later and we are still supplementing. Between growth spurts and the fact that iron is a difficult nutrient to absorb, it's taking time to work up to the iron level that our son's doctor targeted for him.

My son eats meat and some vegetables, not foods that all toddlers like. He's a milk drinker but not excessively so and juice is minimal. Of course, we have the typical toddler feeding issues of eating well one day and not another. And meal planning is a bit more complicated since it involves pairing iron and vitamin C rich foods. But I've got that one covered and I consider us lucky.

To the health of our children,

Katherine

5 comments posted

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  • March 21, 2013 9:30 a.m.

    I am really not surprised at this finding! I have had RLS for years, but in the last 2 years diagnosed with Celiac. I can now see the link between the two, and unfortunately, can also see my symptoms in my daughter as well. I'd love to know if there is any link with RLS and pernicious anemia, a malabsorption disorder, which has raised some questions being linked to Celiac as well.

    - Cheri

  • February 9, 2013 12:07 p.m.

    RLS happens in 5-12% of all adults. I have online support groups for RLS with over 4,000 members from 30 different countries. Parents loking for help, average age of members in my groups is 60, but getting younger. RLS is neurological, and progressive. I am 56 and have RLS severely impact my life after breaking my back. RLS is also genetic in 60 % of the cases. Some secondary RLS can have underlying causes, and iron only helps if your body is not storing it correctly. Other poster said too much iron is not safe, and it can kill you, so if your legs are restless, get a Ferritin level done, plus iron serum. Ferritin levels show how your body stores the iron, not if you are anemic.

    - Donna

  • February 6, 2013 4:09 p.m.

    Yes it does occur in adults,my son is 53 and takes a script for rls,as far as lacking iron u have to be careful because it can affect ur heart if given too much, best to see ur DR.

    - catherine

  • February 6, 2013 11:36 a.m.

    Keri - yes, absolutely. My 'restless legs' made my life miserable until I became so anemic that I needed a transfusion, and follow up iron infusions. After that, no more restless leg. It also made a huge difference in my mental abilities, which had declined (and I blamed menopause.)

    - Lee

  • February 5, 2013 4:43 p.m.

    Does this association between iron deficiency and restless leg syndrome occur in adults?

    - keri

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