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This review establishes a tolerable upper intake level of 255 μg/day for selenium in adults, warning that supplements and Brazil nuts may cause excess intake.

Excessive selenium in supplements can cause hair loss and nail issues.

This piece explains that 90% to 95% of pediatric alopecia cases are due to four main causes: alopecia areata, telogen effluvium, tinea capitis, and trichotillomania, with diagnosis typically confirmed through careful examination.

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 discusses current topical treatments, natural products, and complementary therapies for androgenetic alopecia, but it reports no new clinical results.

This study identified dose levels of selenium that can produce toxicity, noting that doses as low as 2-3 µg Se/kg bw/day can lead to adverse effects, and a human mortality study linked 300 µg/day consumption to increased death risk.

This review discusses the range and management of adverse cutaneous reactions to psychotropic medications and emphasizes the need for awareness among clinicians, concluding with a call for careful monitoring and patient education.

This study found that serum levels of zinc, copper, and selenium were significantly lower in patients with alopecia areata compared to healthy controls, regardless of the number of hair loss patches.

This review discusses the use of nutraceuticals in dermatology for preventing and reversing signs of skin aging, but it reports no new clinical results.

This review discusses skin problems common among long-distance runners and outlines helpful treatments, without presenting new clinical results.

This review discusses molecular signaling pathways and nutritional factors influencing feather growth and regeneration in poultry and offers no new results; the authors suggest these insights may guide strategies for producing superior plumage.

This article reviews advances in the histologic evaluation of alopecia and hair-related disorders, without presenting new clinical results.

Accidental findings have led to new hair treatment discoveries, like using blood pressure and diabetes medications for hair loss and unwanted hair.

This case report describes the first known instance of hair loss linked to agomelatine, which resolved after the drug was discontinued.

This review examines the differences in dermatology practices between Europe and North America, noting that European dermatologists often prioritize evaluating patients' psychosocial factors and utilize nondrug treatments, unlike their North American counterparts.

This study found that iodine deficiency, iodine excess, or the presence of antithyroid substances affected growth and behavior in Wistar rats, leading to various symptoms such as lethargy and alopecia.

The document explains different hair and scalp conditions, including common hair loss after pregnancy or illness, drug-induced hair loss, hereditary excessive hair growth, patterned baldness, autoimmune hair loss, and permanent loss due to skin disease, with generally limited treatment options.

The document concludes that while some hair and scalp disorders can be treated, hair loss from destroyed follicles is permanent, and damaged hair can only regrow naturally.

Pharmacists play a crucial role in improving patient outcomes through personalized care and staying updated with scientific advancements.

This study reviewed literature on hair growth and found that external factors like pollution, stress, and nutrition can adversely affect hair, concluding that a multifactorial approach and personalized nutrition monitoring are essential for effective hair loss therapy.

This study reviews current research on skin repair and regeneration, highlighting promising methods such as stem cell therapies, nanotechnology, and skin substitutes, which may enhance healing and resistance to environmental damage.

Pharmacists play a crucial role in patient care and education.

In this study, researchers differentiated human induced pluripotent stem cells into dermal papilla-like cells and observed gene expression dynamics during five stages of dermal differentiation, demonstrating the potential of these cells to interact with epidermal cells in functional assays.

This study investigated the use of spironolactone in patients with estrogen-dependent cancers, aiming to determine if it is linked to increased cancer recurrence risk, but results are not reported.

This narrative review describes the components of human hair and their nutritional importance but reports no clinical results; the authors suggest dietary sulfur amino acids are essential for hair health.

Some nutrients and antioxidants may improve skin and hair health, but more research is needed to confirm these benefits.

This review discusses various drugs and chemicals potentially causing hair loss, mechanisms involved, and suggests models for testing but reports no new clinical findings.

This study found that a hair serum containing amla extract, freeze-dried coconut water, and selenium significantly improved hair growth rate, density, and reduced hair fall among healthy volunteers over 90 days.

This report presents a case where a 17-year-old male developed severe unilateral alopecia following radiotherapy for pediatric glioblastoma multiforme, which did not respond to minoxidil or platelet-rich plasma treatments.