Improvement after a supplement is not the same as a comparative result
Start with the comparison. A before-and-after change alone cannot isolate the contribution of an ingredient.
Iodine
Selected research topic
Cognition
The comparison is unconfirmed, so the findings cannot establish this ingredient’s effect.
Some publications still need interpretation checks and are kept separate from the findings below.
- Publications for this topic
- 2
- Human comparison publications
- 0
- Publications needing review
- 1
Findings in the studies
child cognitive
Research with unclear study subject or type
- A change was reported, but the comparison could not be confirmed.Single ingredient · child follow-up; unspecified
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Recorded population category: Patient group. Whether the research involved humans needs confirmation.
- Ingredients tested
- Single ingredient
- How results were compared
- Study comparison: iodine supplementation versus comparator not specified in abstract; pooled child-cognition result fr
- Additional measurement information
- Primary outcome
- Measurement time
- child follow-up; unspecified
Representative outcome and study details
Studies with an unspecified organism reported a change with no confirmed comparison group in child cognitive.
Single-ingredient studies · Includes patient groups · comparator not confirmed
1 publications linked to this result
- Route, form, dose, or population details are incomplete, so the findings cannot be confirmed as directly comparable.
Data coverage and detailed study classifications
Paper counts are separated by research topic below. One paper may contribute to multiple findings.
Analysis status: Public-ready
Ingredient analysis date:
How the grade was determined: B
The 57.4 evidence score includes 0 independent human studies and 0 clinical studies in the representative benefit area. The B tier remains conservative because of limited repetition across independent human clinical studies, too few clinical findings with an explicit effect direction.
The grade is based mainly on the research area with the most evidence. It does not mean the same result was found in other areas.
Papers linked to this ingredient overall: 72
Papers linked to this topic 2 · distinct papers 2 · comparison findings need further review · papers needing additional review 1
A publication may appear in more than one count. These numbers should not be added. Ingredient-wide papers, topic-linked papers, and sources in outcome groups use different scopes. Adding source counts may count the same paper more than once.
- child cognitive: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
What the research found
child cognitive
A change was reported, but the comparison could not be confirmed.
Meta-analysis · Single ingredient · Patient group
Analysis coverage and paper counts
1 paper · 1 measured outcome
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Controlled study in people · Single ingredient · Unspecified population
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
How to read research findings
How should I read research findings?
Research guidesNo clear difference and an uninterpretable result are different
A reported null comparison contains a result. An abstract without an interpretable comparison leaves a question unresolved.
Paper counts and study counts are different
Count original research separately from research that reanalyzes it. Publication volume is neither replication nor a quality rating.
Side effects and combination findings
Findings from this ingredient alone are shown separately from those involving another supplement or medication.
No reviewed caution rules are available yet. Reported caution findings are shown below.
Findings to review with care
Side effects reported for the ingredient alone are separated from findings involving another supplement or medication.
Side effects reported with this ingredient alone
Symptoms or adverse events reported in studies without another active ingredient.
Iodine toxicity1 papers
Excess iodine exposure from environmental contamination can cause serious physiological adverse effects in humans.Human studies · Systematic reviewCell viability1 papers
Higher concentrations of iodine (Lugol solution) induce cytotoxicity and apoptosis in pancreatic beta cells.Cell studies · Cell or in-vitro study