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Improvement in iodine status of pregnant Australian women 3 years after introduction of a mandatory iodine fortification programme

Journal Article


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Abstract


  • Introduction

    In order to address population-level mild iodine deficiency in Australia, a mandatory iodine fortification programme of salt used in bread was introduced in late 2009.

    Methods

    A before–after study was conducted to assess changes in median urinary iodine concentration (MUIC) measurements, according to supplement use, in convenience samples of pregnant women attending a public antenatal clinic in a regional area of New South Wales, Australia in 2008 (n = 139), 2011 (n = 147) and 2012 (n = 114). Knowledge and practices related to iodine nutrition were investigated in 2012, using self-administered questionnaires.

    Results

    The mild iodine deficiency confirmed pre-fortification (MUIC (IQR) = 87.5 (62–123.5; n = 110)) has steadily improved to 145.5 μg/L (91–252) in 2011 (n = 106) and 166 (97–237) in 2012 (n = 95) (sufficiency ≥ 150 μg/L). However, only women taking supplements containing iodine had MUIC indicative of sufficiency in both years surveyed post fortification (2011: 178 μg/L vs. 109 μg/L, P < 0.001; 2012: 202 μg/L vs. 124 μg/L, P < 0.05). Despite bread being the vehicle for iodine fortification, dairy foods remained major contributors to total iodine intake (58%). Overall knowledge regarding health implications of iodine deficiency was poor.

    Conclusions

    Iodine status of women has improved since the introduction of mandatory iodine fortification; however supplementation is indicated during pregnancy.

Authors


  •   Charlton, Karen E.
  •   Yeatman, Heather
  •   Brock, Erin (external author)
  •   Lucas, Catherine (external author)
  •   Gemming, Luke (external author)
  •   Goodfellow, Alison (external author)
  •   Ma, Gary (external author)

Publication Date


  • 2013

Citation


  • Charlton, K. E., Yeatman, H., Brock, E., Lucas, C., Gemming, L., Goodfellow, A. & Ma, G. (2013). Improvement in iodine status of pregnant Australian women 3 years after introduction of a mandatory iodine fortification programme. Preventive Medicine, 57 (1), 26-30.

Scopus Eid


  • 2-s2.0-84878656643

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1688&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/675

Number Of Pages


  • 4

Start Page


  • 26

End Page


  • 30

Volume


  • 57

Issue


  • 1

Abstract


  • Introduction

    In order to address population-level mild iodine deficiency in Australia, a mandatory iodine fortification programme of salt used in bread was introduced in late 2009.

    Methods

    A before–after study was conducted to assess changes in median urinary iodine concentration (MUIC) measurements, according to supplement use, in convenience samples of pregnant women attending a public antenatal clinic in a regional area of New South Wales, Australia in 2008 (n = 139), 2011 (n = 147) and 2012 (n = 114). Knowledge and practices related to iodine nutrition were investigated in 2012, using self-administered questionnaires.

    Results

    The mild iodine deficiency confirmed pre-fortification (MUIC (IQR) = 87.5 (62–123.5; n = 110)) has steadily improved to 145.5 μg/L (91–252) in 2011 (n = 106) and 166 (97–237) in 2012 (n = 95) (sufficiency ≥ 150 μg/L). However, only women taking supplements containing iodine had MUIC indicative of sufficiency in both years surveyed post fortification (2011: 178 μg/L vs. 109 μg/L, P < 0.001; 2012: 202 μg/L vs. 124 μg/L, P < 0.05). Despite bread being the vehicle for iodine fortification, dairy foods remained major contributors to total iodine intake (58%). Overall knowledge regarding health implications of iodine deficiency was poor.

    Conclusions

    Iodine status of women has improved since the introduction of mandatory iodine fortification; however supplementation is indicated during pregnancy.

Authors


  •   Charlton, Karen E.
  •   Yeatman, Heather
  •   Brock, Erin (external author)
  •   Lucas, Catherine (external author)
  •   Gemming, Luke (external author)
  •   Goodfellow, Alison (external author)
  •   Ma, Gary (external author)

Publication Date


  • 2013

Citation


  • Charlton, K. E., Yeatman, H., Brock, E., Lucas, C., Gemming, L., Goodfellow, A. & Ma, G. (2013). Improvement in iodine status of pregnant Australian women 3 years after introduction of a mandatory iodine fortification programme. Preventive Medicine, 57 (1), 26-30.

Scopus Eid


  • 2-s2.0-84878656643

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1688&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/675

Number Of Pages


  • 4

Start Page


  • 26

End Page


  • 30

Volume


  • 57

Issue


  • 1