Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
363 participants
OBSERVATIONAL
2017-07-10
2018-12-31
Brief Summary
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In this longitudinal observational cohort study in women of reproductive age we will collect 24h and spot urine samples in the summer and winter season. The influence of high temperature climates on UIC, measured and estimated urinary iodine excretion will be estimated.
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Detailed Description
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Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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Tanzanian Women of Reproductive Age
Healthy women of reproductive age living in Tanzania in an area with hot and temperate climate
Climate
Hot and temperate climate
South African Women of Reproductive Age
Healthy women of reproductive age living in South Africa in an area with hot and temperate climate
Climate
Hot and temperate climate
Interventions
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Climate
Hot and temperate climate
Eligibility Criteria
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Inclusion Criteria
* Non-pregnant and non-lactating
* General good health, assessed by no reported treatment for chronic disease
* Non-smoking
* No known history of major medical illnesses or thyroid dysfunction as well as gastrointestinal or metabolic disorders and taking no chronic medication
* Residence at the respective study site for 12 months or longer and no plans of moving away during the study year.
* No use of iodine containing dietary supplements during the last 6 months
* No use of X-ray / CT contrast agent or iodine containing medication within the last year
* No use of iodine containing disinfectants during the last 6 months
* Participants should be between 18 and 49 years at date of enrollment
18 Years
49 Years
FEMALE
Yes
Sponsors
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Ministry of Health, Tanzania
OTHER_GOV
North-West University, South Africa
OTHER
Swiss Federal Institute of Technology
OTHER
Responsible Party
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Prof. Michael B. Zimmermann
Prof. Dr.
Principal Investigators
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Michael B Zimmermann, Prof. Dr.
Role: PRINCIPAL_INVESTIGATOR
ETH Zurich
Locations
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Centre of Excellence for Nutrition, Faculty of Health Science, North West University
Potchefstroom, , South Africa
Ministry of Health, Community Development Gender, Elderly and Children
Dar es Salaam, , Tanzania
Countries
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References
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Arns-Glaser L, Zandberg L, Assey VD, Baumgartner J, Abdallah F, Galetti V, Dary O, Zimmermann MB, Andersson M. Seasonal effects on urinary iodine concentrations in women of reproductive age: An observational study in Tanzania and South Africa. Am J Clin Nutr. 2022 Jan 11;115(1):298-309. doi: 10.1093/ajcn/nqab327.
Other Identifiers
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LION
Identifier Type: -
Identifier Source: org_study_id
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