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This study reviews iron metabolism in the skin, highlighting how differentially expressed genes regulate iron recycling in the epidermis, and discusses changes in iron metabolism related to skin diseases.

This review describes the role of iron deficiency in hair loss and explores the management of diffuse alopecia, emphasizing the potential of a new iron-based dietary supplement but reports no new clinical results.

No direct link between matcha green tea and hair loss is proven.

This study found that biliverdin beta and delta, metabolites of heme, play a critical role in Pseudomonas aeruginosa iron acquisition and cooperative behaviors, which are crucial for the bacterium's long-term infection in cystic fibrosis patients, suggesting potential targets for new therapies.

This study reported that the PrrH sRNA in *Pseudomonas aeruginosa* may directly regulate genes involved in pyochelin siderophore biosynthesis, highlighting its role in adapting to heme availability, with light conditions influencing this gene expression.

This study identified the genes for pyochelin siderophore biosynthesis as a novel target regulated by the heme-responsive PrrH sRNA in Pseudomonas aeruginosa.

This review discusses the importance of heme oxygenase in skin physiology and disease, but it reports no new clinical results; the authors highlight its potential as a treatment target for conditions like atopic dermatitis and psoriasis.

Children need early diagnosis and treatment for iron-deficiency anemia to prevent learning problems and promote health.

This review discusses the complexities of diagnosing and treating iron deficiency related to nutritional anemia and hair loss, concluding that routine screening and supplementation for hair loss are not yet supported by sufficient evidence.

This study found that supplementation with micronized and emulsified ferric pyrophosphate effectively improved lab test results and reduced iron deficiency symptoms in patients aged 19-70, with the majority reporting good tolerance and few side effects.

This pilot study observed that post-bariatric surgery, both zinc and iron deficiencies increased among Iraqi patients, underscoring the importance of lifelong nutritional monitoring and targeted supplementation to address these issues and prevent related complications.

Intermittent iron and nutritional supplements can help reduce hair loss.

This study suggests that a mixture of 5‐ALA and iron ion significantly improved hair growth in mice, comparable to minoxidil, without promoting keratinocyte or fibroblast proliferation in vitro.

This review examines the debated link between iron deficiency and nonscarring scalp alopecia in women, offering no new clinical results but emphasizing the need for further research and well-designed trials.

In this study, researchers found that relying solely on ferritin to assess iron status in young females with higher BMI may lead to inaccurate diagnoses of iron deficiency due to inflammation-related ferritin elevation.

Iron deficiency might cause hair loss, but better testing is needed.

This case report describes a 34-year-old woman who, after Roux-en-Y gastric bypass surgery, experienced improvements in symptoms of dizziness and energy following treatment with oral ferrous sulfate for iron deficiency.

This study reports that compound heterozygous loss-of-function mutations in the HEPHL1 gene in a child were associated with abnormal hair and cognitive issues, linking altered ferroxidase activity to hair disorders.

This study found that controlling transferrin receptor expression effectively regulates iron content in the epidermis and hair of transgenic mice.

This study found that living environment significantly influenced Fe concentrations in dog and cat hair, with outdoor animals showing higher levels than those kept indoors.

This study investigated the electron transfer processes in an iron-mediated DAMO–anammox system, finding that Fe3+ accelerated c-type cytochrome-mediated electron transfer and suggested that riboflavin acts as an electron shuttle and DIET may occur among these microorganisms.

This study investigated how keratinocytes in the skin respond to different iron levels and found they play a significant role in regulating iron homeostasis by storing iron, affecting epidermal differentiation, and influencing inflammation-related gene expression in mice.

This review highlights the critical role of iron in skin functions and suggests potential dermatologic therapies targeting the iron-skin axis.

This study found that testosterone-enanthate increased red blood cell production and altered iron homeostasis in older hypogonadal men without being affected by finasteride, indicating these effects do not require type II 5α-reductase enzyme activity.

This study developed mathematical models showing that heat penetrates individual hair quickly but takes longer to reach the center of hair bundles, helping understand potential damage from high-temperature styling tools.

In this study of women with female pattern hair loss, iron deficiency was associated with the condition due to significantly lower serum ferritin and altered hematological indices compared to healthy controls, while no significant differences in serotonin levels or renal function were observed.

Chronic kidney disease can cause hair loss, which may be related to zinc deficiency or certain medications, and sometimes hair grows back when the underlying issue is treated.

This article addresses the need to screen for nutrient deficiencies in patients with hair loss but reports no new findings, noting that supplementation without deficiency may not be beneficial and could pose risks.

This review discusses the role of diet in managing hair loss during menopause and reports no new clinical results; it highlights the importance of nutrients like sulfur amino acids, vitamins, and minerals.

This review explores the similarities between polycystic ovary syndrome and hemochromatosis in terms of iron overload and suggests that addressing gut dysbiosis might help manage iron levels in these conditions.