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This study reports that riboflavin may increase enzymatic activity in a GCDH-deficient patient with specific mutations, but doesn't fully normalize urinary organic acid levels.

This review discusses genetic and nutritional causes of hair loss, highlighting that around 90% of treated men show noticeable hair regrowth with a dual inhibitor, while women's hair loss may improve by correcting iron and l-lysine deficiencies.

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 article discusses how nutritional and environmental factors, along with antioxidant supplementation, may improve hair growth by mitigating the effects of androgens and reports no new clinical results.

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 study observed that amino acid uptake into wool follicles varies significantly, with cysteine showing the highest uptake rate, suggesting specialized transport systems that may influence wool growth.

This review discusses the effects of dietary protein and its components on cholesterol, essential fatty acids, and possible health consequences, but presents no new clinical findings.

This review covers cell transplantation methods for genitourinary reconstruction, discussing tissue sources and complications but presenting no new clinical findings.

This study found that a higher potassium diet in lysine-deficient rats partially protected against hair loss and increased liver fat, suggesting these rats require more potassium.

This study found that cathepsin L deficiency in mice led to significant abnormalities in hair follicle development and cycling, including disrupted hair shaft outgrowth and premature hair growth phase entry.

This study found that a food supplement improved skin moisturization, elasticity, and thickness, reduced telogen hair density, and enhanced nail status in women with mild-to-moderate aging signs after 84 days.

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.

This study found that L-cystine, D-pantothenat, and miliacin can enhance the metabolic capacity and proliferation of human keratinocytes, with a combination of these additives potentially providing synergistic benefits in growth media.

This case study identified low iron stores, potentially linked to heavy menstrual periods, as a trigger for diffuse nonscarring alopecia in a 31-year-old woman, leading to a diagnosis of telogen effluvium, for which iron supplementation was prescribed.

This study found that adding molybdenum to poultry diets depressed growth without affecting feather pigmentation, and copper supplementation tended to counteract the growth inhibition.

This review reported that while glycyl-L-histidyl-L-lysine tripeptide copper complex (GHK–Cu) has limited skin permeation when used alone, liposomes may enhance its absorption, but there is limited research on this aspect, highlighting a need for further studies.

This study found no significant link between iron metabolism, including serum ferritin and hemoglobin levels, and telogen effluvium in women under 40 years old.

This study reported that topical ω‐0‐acylceramide improved skin barrier function in Jack Russell Terriers with TGM1-deficient autosomal recessive congenital ichthyosis, normalizing skin pH and reducing transepidermal water loss.

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 study found that l-carnitine stimulated hair growth in vitro by promoting proliferation and reducing apoptosis in human scalp hair follicles, suggesting potential as a treatment for hair loss.

In this study, researchers found that supplementation with L-cystine, either alone or with a keratin hydrolysate, significantly improved hair density, hair and nail brightness, and nail growth in women experiencing acute telogen effluvium and brittle nail syndrome over three months.

This study concluded that iron deficiency is common among women but not more prevalent in those with female pattern hair loss or chronic telogen effluvium compared to control subjects without hair loss.

In this study, biotinidase deficiency in children usually presented with neurological or skin symptoms, while metabolic ketoacidosis and organic aciduria appeared later.

This study explored the structure and function of lipocalin prostaglandin D synthase, revealing its dual role in substrate catalysis and as a lipophilic ligand carrier, potentially informing future drug delivery design.

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 case report describes a male patient with aromatase deficiency, revealing that a c.628G>A mutation can lead to varied clinical features, such as low bone mass and normal metabolic profiles.

This study found that biallelic mutations in the TTC7A gene affect lymphocyte and gut epithelial cell function, thereby contributing to the development of inflammatory bowel disease in patients.

This case report describes a girl in China with biotinidase deficiency confirmed by genetic mutations, whose skin and hair symptoms improved with biotin therapy.

This study describes a case where a patient with Vitamin B12 deficiency symptoms achieved increased serum B12 levels and symptom relief through treatment with Amyron syrup and Amlycure DS capsules, rather than traditional B12 supplements.

This study found that oil from CG17 garden cress seeds had higher amounts of β-carotenoids, tocopherols, and vitamins compared to other genotypes, with varying physiochemical properties across all seeds.