Iodine knowledge is associated with iodine status in Portuguese pregnant women: results from the IoMum cohort study

Pinheiro, Ana Catarina; Moreira, Nara Xavier; Matta-Coelho, Cláudia; Guimarães, Juliana; Pereira, Gonçalo; Cortez, Alane Pereira; Bracchi, Isabella; Pestana, Diogo; Mota, Inês Barreiros; Prucha, Carmo; Martins, Carla; Ribeiro, Célia Alves; Pinto, Edgar; Delerue–Matos, Cristina; Montenegro, Nuno; Dias, Cláudia Camila; Moreira-Rosário, André; Azevedo, Luís Filipe; Brantsæter, Anne Lise; Ramalho, Carla; Fernandes, Virgínia Cruz; Leite, João Costa; Calhau, Conceição; Keating, Elisa

doi:10.1017/s0007114521000155

Cited by 12 publications

(10 citation statements)

References 36 publications

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“…children and elderly), and also the one presented by men (40) . Actually, in the IoMum cohort, we could also observe that a very small proportion of the population was aware of the importance of milk as a good source of iodine (41) and, also due to literacy issues, iodised salt consumption was not used as a co-variable as we were not able to confirm those that were actually consuming iodised salt. On public health grounds, the need to raise awareness and inform women of childbearing age regarding the association between milk intake and iodine status should be a subject of reflection.…”

Section: Discussionmentioning

confidence: 82%

The association of milk and dairy consumption with iodine status in pregnant women in Oporto region

et al. 2021

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The role of milk and dairy products in supplying iodine to pregnant women is unknown in Portugal. The aim of this study was to evaluate the association between milk and dairy consumption and the iodine status of pregnant women in the IoMum cohort of the Oporto region. Pregnant women were recruited between 10 and 13 weeks of gestation, when they provided a spot urine sample and information on lifestyle and intake of iodine-rich foods. Urinary iodine concentration (UIC) was determined by inductively coupled plasma mass spectrometry. A total of 468 pregnant women (269 iodine supplement users and 199 non-supplement users) were considered eligible for analysis. Milk (but not yoghurt or cheese) intake was associated with UIC, in the whole population (p = 0.02) and in the non-supplement users (p = 0.002), but not in the supplement users (p = 0.29). In non-supplement users, adjusted multinomial logistic regression analysis showed that milk consumption < 3 times a month was associated with a 5 times increased risk of having UIC < 50 µg/L when compared to milk consumption ≥ 2 times a day (OR = 5.4; 95% CI: 1.55-18.78; p = 0.008). The highest UIC was observed in supplement users who reported consuming milk once a day (160 µg/L). Milk, but not yoghurt or cheese, was positively associated with iodine status of pregnant women. Despite the observed positive association, daily milk consumption may not be sufficient to ensure adequate iodine intake in this population.

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Section: Discussionmentioning

confidence: 82%

The association of milk and dairy consumption with iodine status in pregnant women in Oporto region

et al. 2021

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“…Even though the use of MSCI and PBIS was sparse in this study, the efforts put in action by the government are already showing an important improvement in pregnant and breastfeeding women, to whom the PBIS is readily prescribed and freely provided (10). Increasing informed decision making and providing awareness on the benefits of PBIS might provide even further improve results in pregnant women (24).…”

Section: Discussion Of the Resultsmentioning

confidence: 89%

Awareness for Increased Iodine Consumption – Current Status and Future Perspectives

Silva¹

2022

Acta Port Nutr

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INTRODUCTION:Previous studies have shown that the Azorean population presented a lack of iodine intake in children and pregnant women. This led organizations to initiate more efforts to increase awareness and provide solutions to this problem, particularly through the consumption of iodised salt. OBJECTIVES:To clarify the effectiveness of the implemented heath measures and what influenced the use of iodised salt. METHODOLOGY: Observational and cross-sectional study with the application of a questionnaire that surveys iodine consumption in people presenting to the Unidade de Saúde da Ilha do Faial, Azores, between November 9 th and November 14 th , 2020.RESULTS: Out of 100 individuals, 49 consumed iodised salt and 51 individuals did not. The mean age of responders was 49,81 years old. 19 participants had a diagnosis of thyroid disease. A recommendation from a physician and/or a nutritionist was the main reason that influenced people to implement iodised salt in their diet (n=18; 36.7%). Out of the 51 participants who did not consume iodised salt, 21 (41.2%) did not know about the existence of iodised salt and 11 did not know the benefits of iodised salt (21.6%). 28 individuals (28%) stated that a health care professional had recommended them to implement iodised salt or a multivitamin supplement containing iodine in their diet as opposed to 66 (66%) who said they did not receive that recommendation. Individuals who had a recommendation by a health care professional to implement iodised salt or a multivitamin supplement containing iodine are 8 times more likely to utilize iodised salt (OR=8,138; CI 95% [2,764;23,967]).CONCLUSIONS: While it is a work in progress, the implementation of iodised salt in the Azorean's diet has taken a step in the right direction. It was demonstrated that implementing the consumption of iodised salt, explaining its importance and creating awareness of iodine deficiency by a health care worker can be a powerful weapon to tackle iodine deficiency.

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“…A prospective observational study was carried out from the IoMum cohort (Monitoring iodine status in Portuguese pregnant women and the impact of supplementation—trial registration number NCT04010708) according to the guidelines laid down in the Declaration of Helsinki. Pregnant women attending their first trimester routine ultrasound scan at Centro Hospitalar Universitário de São João (CHUSJ), Porto, between April 2018 and April 2019 were invited to participate as described previously [ 37 , 38 , 39 ]. All women who had a routine ultrasound scan between 10 and 13 weeks of gestation with confirmed fetal vitality, who signed the informed consent form, and who provided a urine sample at recruitment in summer or in the winter were included in the study.…”

Section: Methodsmentioning

confidence: 99%

Association of 3-Phenoxybenzoic Acid Exposure during Pregnancy with Maternal Outcomes and Newborn Anthropometric Measures: Results from the IoMum Cohort Study

Guimarães

Bracchi

Pinheiro

et al. 2023

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The aims of this study were to characterize the exposure of pregnant women living in Portugal to 3-phenoxybenzoic acid (3-PBA) and to evaluate the association of this exposure with maternal outcomes and newborn anthropometric measures. We also aimed to compare exposure in summer with exposure in winter. Pregnant women attending ultrasound scans from April 2018 to April 2019 at a central hospital in Porto, Portugal, were invited to participate. Inclusion criteria were: gestational week between 10 and 13, confirmed fetal vitality, and a signature of informed consent. 3-PBA was measured in spot urine samples by gas chromatography with mass spectrometry (GC-MS). The median 3-PBA concentration was 0.263 (0.167; 0.458) µg/g creatinine (n = 145). 3-PBA excretion was negatively associated with maternal pre-pregnancy body mass index (BMI) (p = 0.049), and it was higher during the summer when compared to winter (p < 0.001). The frequency of fish or yogurt consumption was associated positively with 3-PBA excretion, particularly during the winter (p = 0.002 and p = 0.015, respectively), when environmental exposure is low. Moreover, 3-PBA was associated with levothyroxine use (p = 0.01), a proxy for hypothyroidism, which could be due to a putative 3-PBA—thyroid hormone antagonistic effect. 3-PBA levels were not associated with the anthropometric measures of the newborn. In conclusion, pregnant women living in Portugal are exposed to 3-PBA, particularly during summer, and this exposure may be associated with maternal clinical features.

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Iodine knowledge is associated with iodine status in Portuguese pregnant women: results from the IoMum cohort study

Cited by 12 publications

References 36 publications

The association of milk and dairy consumption with iodine status in pregnant women in Oporto region

The association of milk and dairy consumption with iodine status in pregnant women in Oporto region

Awareness for Increased Iodine Consumption – Current Status and Future Perspectives

Association of 3-Phenoxybenzoic Acid Exposure during Pregnancy with Maternal Outcomes and Newborn Anthropometric Measures: Results from the IoMum Cohort Study

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