Research
Micronutrients & recovery
Vitamin D and retinol insufficiency rates approach 100% in both genders across adult and elderly age groups in Iran, representing a critical public health gap.
Vitamin D and Retinol (Vitamin A) are critically low in this population, affecting nearly everyone. Dietary changes alone may not be enough; consider supplementation or fortified foods to address this widespread deficiency.
GoodSupportsHIGH confidence
The percentage of insufficiency was around 100% for retinol and vitamin D in both genders.
Why this rating
Large sample size and consistent findings across age groups and genders.
Source
Dietary intakes in relation to nutrition recommendations and dietary quality in an Iranian adult population: the results of the Food and Nutrition Surveillance (FNS)
Najmeh Seifi et al. · Journal of Health Population and Nutrition · 2025
cross_sectional · n=1697Cited 2×
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 →