Causes of low ferritin
Pro Research Analysisby 
Searched over 200M research papers
Causes of Low Ferritin: An Overview
Celiac Disease and Low Ferritin
Celiac Disease (CD) and Iron Deficiency
Celiac disease is a significant cause of low serum ferritin levels. CD is a genetic disorder that impairs nutrient absorption, leading to iron deficiency. In patients with restless legs syndrome (RLS), low ferritin levels are often observed, and CD can be an underlying cause. Studies have shown that patients with RLS and low ferritin levels who tested positive for CD experienced improvement in symptoms after adopting a gluten-free diet . This suggests that CD should be considered in patients with unexplained low ferritin levels.
Genetic Factors and Low Ferritin
Genetic Hemochromatosis (GH)
In genetic hemochromatosis, a defect in ferritin synthesis regulation leads to low ferritin accumulation despite normal gene transcription. This condition is characterized by low expression of ferritin messenger RNA and increased activity of the iron regulatory factor, which inhibits ferritin synthesis .
Mutations in the FTL Gene
Mutations in the L-ferritin subunit gene (FTL) can also cause low ferritin levels. For instance, a specific missense mutation (c.473T>C; p.Pro158Leu) has been identified in individuals with low serum ferritin but normal other iron parameters. This mutation affects the ability of ferritin to store iron, leading to low ferritin levels despite normal iron levels in the body . Additionally, other mutations in the FTL gene can lead to conditions like hereditary hyperferritinemia-cataract syndrome and neuroferritinopathy, which are associated with abnormal ferritin levels .
Iron Deficiency and Restless Legs Syndrome (RLS)
Iron Deficiency as a Risk Factor for RLS
Low serum ferritin is a known risk factor for RLS. A meta-analysis has shown that patients with RLS and low ferritin levels are more likely to experience augmentation, a worsening of symptoms due to dopaminergic treatment. Iron supplementation can alleviate RLS symptoms and reduce the risk of augmentation, highlighting the importance of addressing iron deficiency in these patients .
Inflammation and Ferritin Levels
Inflammation's Impact on Ferritin
Inflammation can complicate the assessment of iron deficiency by increasing ferritin levels. Elevated levels of acute-phase proteins like C-reactive protein (CRP) and alpha(1)-acid glycoprotein (AGP) can artificially raise ferritin levels, masking underlying iron deficiency. Adjusting ferritin concentrations to account for inflammation is crucial for accurate diagnosis and management of iron deficiency .
Conclusion
Low ferritin levels can result from various causes, including celiac disease, genetic mutations, and iron deficiency associated with conditions like restless legs syndrome. Inflammation can also affect ferritin levels, complicating the diagnosis of iron deficiency. Understanding these diverse causes is essential for accurate diagnosis and effective treatment.
Sources and full results
Most relevant research papers on this topic
Celiac disease as a possible cause for low serum ferritin in patients with restless legs syndrome.
Celiac disease may cause low serum ferritin in patients with restless legs syndrome, and diagnosis and treatment of CD may improve their RLS symptoms and identify individuals at risk for long-term complications.
Duodenal ferritin synthesis in genetic hemochromatosis.
In patients with genetic hemochromatosis, low duodenal ferritin accumulation is caused by low expression of ferritin messenger RNA and sustained activity of iron regulatory factor, not defective control of ferritin synthesis.
A unique mutation in the L ferritin coding sequence associated with low serum ferritin level in the presence of normal values of other iron parameters.
This study identified a unique mutation in the FTL gene, causing low serum ferritin levels in individuals with normal iron parameters, suggesting ferritin connects iron but cannot store it.
DOI