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This study confirmed that 25(OH)D3 can be detected in hair samples from healthy young adults, but no correlation was found between hair and serum 25(OH)D3 concentrations, indicating limited potential as a standalone biomarker.

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.

This study found that adult males in Taiz, Yemen with dermatological disorders had significantly lower serum zinc and hemoglobin levels compared to healthy controls, highlighting the importance of assessing micronutrient status in skin disease management.

This study explored 25-hydroxyvitamin D3 levels in hair samples from participants in Aberdeen and suggested potential links between hair vitamin D levels, seasonal UVB exposure, and marine diet in both modern and archaeological contexts.

This review found that hair loss is common in women after bariatric surgery, linked to nutritional deficiencies and rapid weight loss, highlighting the need for further research and nutrient monitoring.

Vitamin D is crucial for skin health and managing skin diseases.

This review explores the role of nutritional factors in hair loss, noting that iron and l-lysine supplementation may benefit some individuals, while excessive supplements can lead to hair shedding.

This review discusses biotin and biotinidase deficiencies, their symptoms, and methods of medical management, without presenting new clinical findings.

This study found that severe zinc deficiency induced in weanling rats led to growth retardation, hair issues, and dermal lesions, all of which were completely reversed by zinc supplementation.

This study reports that selenium deficiency in children on long-term total parenteral nutrition may lead to symptoms like erythrocyte macrocytosis and skin and hair depigmentation, which improved with selenium supplementation.

This review discusses zinc's role as an essential trace element in human nutrition, particularly its importance in total parenteral nutrition, and reports no new clinical results.

Alopecia Areata affects 2% globally, with treatments like essential oils, garlic, and JAK inhibitors showing promise, but more research is needed.

This study found no direct relationship between low serum ferritin and chronic diffuse telogen hair loss in women, questioning the usefulness of serum ferritin measurement and iron supplementation for managing this condition.

This study found that antibiotic-induced gut dysbiosis, particularly overgrowth of Lactobacillus murinus, can lead to hair loss in mice by depleting biotin.

This review discusses the use of biotin for hair and nail growth, noting clinical improvement in cases with existing pathologies, but concludes there is insufficient evidence supporting its benefits for healthy individuals.

This review discusses clinical methods for diagnosing alopecia and examines current treatments for both cicatricial and noncicatricial forms but provides no new clinical results.

This study observed that patients with various types of hair loss had significantly lower serum zinc levels compared to healthy controls, suggesting zinc disturbance may play a role in the condition.

In this study, valproic acid treatment was associated with reduced biotinidase activity and improved skin lesions after biotin supplementation in children with seizures.

This study found that 38% of women with hair loss had a biotin deficiency, suggesting oral biotin supplementation should be based on confirmed biotin deficiency rather than as a general treatment.

This review discusses the various triggers and diagnostic challenges in determining the cause of telogen effluvium-related hair loss, without providing new clinical results.

This review discusses how changes in hair and skin may indicate underlying vitamin deficiencies and emphasizes the need to identify populations at risk for these deficiencies; it reports no new results.

Zinc deficiency in monkeys causes skin issues and reproductive problems, but supplementation reverses these effects.

This review discusses various therapeutic agents for alopecia areata, categorized by efficacy and safety, and highlights the lack of curative treatments and long-term outcome studies.

This review discusses the history and impact of iron deficiency anemia in women, highlighting its prevalence and the need for better detection and care, especially for those undergoing anesthesia.

In this report, it was noted that severe paresthesia, ophthalmoplegia, cerebellar and extrapyramidal signs, and alopecia can strongly indicate thallium poisoning, and haemodialysis may be beneficial even in the third week after poisoning.

This article discusses the controversy over serum ferritin levels in diagnosing iron deficiency in women with hair loss but reports no new findings, emphasizing the need for consistent reference ranges.

This case study of three siblings highlights the importance of recognizing dermatologic signs—alopecia and periorificial dermatitis—for early diagnosis and treatment of biotin-responsive multiple carboxylase deficiency.

This study reports two cases of acquired zinc deficiency presenting with skin symptoms such as hair loss and acrodermatitis, suggesting these manifestations may help in diagnosing zinc deficiency in humans.

This study found associations between genetic predictors of increased testosterone and cardiovascular risk factors, but the implications for testosterone supplementation are unclear due to uncertainties in genetic variant functions.

This study found that supplementing zinc improved certain developmental defects in mice with the lethal-milk mutation, although it did not increase the survival rate among backcross progeny.