Research
Micronutrients & recovery
Regional variations in iodine status exist in Canada, with residents of Quebec City and Vancouver having significantly lower iodine status compared to those in Hamilton and Ottawa, driven by differences in dietary habits and environmental exposure to inhibitors.
Where you live affects your iodine status. People in Quebec City and Vancouver were found to have lower iodine levels than those in Hamilton and Ottawa. This is likely due to local dietary differences (less dairy/bread) and higher exposure to inhibitors like smoking. Check your local food sources.
GoodSupportsHIGH confidence
Participants residing in Quebec City (OR = 2.58; p = 1.74 × 10−4) and Vancouver (OR = 2.54; p = 3.57 × 10−4) were more susceptible to iodine deficiency than Hamilton or Ottawa.
Why this rating
Large sample size, robust measurement, statistically significant regional differences.
Source
The Prevalence and Risk Factors Associated with Iodine Deficiency in Canadian Adults
Stellena Mathiaparanam et al. · Nutrients · 2022
cross_sectional · n=800Cited 14×
Read the paper This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →