Research
Hormonal
Elevated adipocyte iron levels directly suppress adiponectin transcription via FOXO1-mediated repression, leading to decreased insulin sensitivity and increased diabetes risk.
If you have high-normal ferritin (especially men or post-menopausal women) and insulin resistance, reducing iron stores (e.g., through phlebotomy if indicated) may improve insulin sensitivity by restoring adiponectin levels. Do not self-prescribe iron supplements if ferritin is high.
GoodSupportsHIGH confidence
We found that iron negatively regulated adiponectin transcription via FOXO1-mediated repression. Further, loss of the adipocyte iron export channel, ferroportin, in mice resulted in adipocyte iron loading, decreased adiponectin, and insulin resistance.
Why this rating
Strong evidence across multiple models: human observational data, cell culture, and multiple mouse genetic models (knockouts and overloads).
Source
Adipocyte iron regulates adiponectin and insulin sensitivity
J. Scott Gabrielsen et al. · Journal of Clinical Investigation · 2012
DOI 10.1172/jci44421
mechanism_only · n=110Cited 328×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Phlebotomy in humans with high-normal ferritin and impaired glucose tolerance increases adiponectin and improves glucose tolerance.Good
- Hereditary hemochromatosis (HH) is associated with increased insulin sensitivity and higher adiponectin levels due to low adipocyte iron, despite systemic iron overload.Good
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