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This review summarizes existing studies on toxic agents that can cause alopecia, with thallium and colchicine having the most established links, while others like botulinum toxin A need further investigation.

This study found that a significant number of boreal woodland caribou in NE British Columbia showed symptoms of trace mineral deficiencies and exposure to various pathogens, with substantial winter tick infestations affecting a majority of individuals.

This study found that dogs with idiopathic epilepsy had altered hair concentrations of several trace elements, which may suggest a role in the disease's pathophysiology and indicate effects from antiseizure medications.

This study found that selenium therapy could normalize metabolic and endocrine markers and improve clinical outcomes in cystic fibrosis patients, with stable benefits when administered at a lower dosage over a year.

This study at a medical center in Eastern Taiwan found that female alopecia has diverse causes, including nutrient deficiencies, autoimmune diseases, psychological stress, thyroid conditions, and COVID-19 vaccination, with iron deficiency affecting 70.3% of cases.

This review discusses the relationship between oxidative stress and polycystic ovarian syndrome and reports no new clinical results; the authors emphasize the need for further research into therapeutic strategies.

This article discusses the interplay of skin, immunity, and nutrition, highlighting dietary and probiotic options for managing skin conditions, but reports no new clinical findings.

This review of studies on prostate cancer chemoprevention in Europe reports no robust evidence supporting the effectiveness of chemopreventive agents, though vitamin E and selenium may potentially contribute to prevention efforts.

This review explores the connection between oxidative stress and polycystic ovary syndrome, discussing potential mechanisms and the possible role of antioxidants; it reports no new clinical results.

This review examines theories linking PCOS with psychiatric disorders, highlighting dietary interventions like probiotics and nutrients as possible improvements, but reports no new clinical findings and calls for more research.

This review highlights the role of chronic stress, oxidative stress, and immune processes in the development of Hashimoto’s thyroiditis and polycystic ovary syndrome, emphasizing the potential of antioxidants in their treatment based on the existing literature.

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 study found no differences in trace element concentrations between Finnish alopecia patients and the normal population, but noted significant serum copper variation among different alopecia subtypes.

The authors concluded that administering biotin may help prevent alopecia caused by reduced biotinidase activity during valproic acid therapy in rats.

This review discusses the potential of using nanomaterial-based drug delivery systems to improve the treatment of polycystic ovary syndrome but reports no new clinical results, highlighting future research directions.

This study found that chemical elements, particularly hair selenium, may indicate nutritional status in older adults, with variations observed by age and gender.

Vitamin D and zinc may help treat alopecia areata.

This review discusses the use of zinc supplementation in dermatology for various skin conditions and reports no new clinical results, providing references for its application.

This study reports that telogen effluvium, a reversible hair loss condition following COVID-19, is influenced by factors like stress and inflammation, but appropriate dermatological treatment can aid recovery, as highlighted by a clinical case example.

This study identified that copper depletion in dermal papilla cells reduced hair growth by boosting ROS levels, but ROS scavengers like NAC and ascorbic acid partially alleviated this effect.

In this study, exotic lice were found to be widespread among mule deer in California, with younger age classes and low blood selenium concentrations being significantly associated with infestation.

In this study, adults with mild-to-moderate hair damage taking GPVGPS Collagen® daily for 24 weeks showed significant improvements in hair luster, strength, thickness, and density compared to placebo, with no safety concerns reported.

This study found that disease duration was the only independent risk factor for increased severity of female pattern hair loss, rather than elements, vitamins, or hormones.

This study found that individuals with hair loss complaints had slightly lower zinc levels compared to controls, but the difference was clinically insignificant, suggesting zinc testing is not essential for diagnosing hair loss.

This study reports that women with hair loss had significantly lower levels of several biomarkers, including hemoglobin, iron, copper, selenium, vitamin D, vitamin B12, folate, and thyroid hormones, compared to healthy controls.

This research highlights that various environmental pollutants, including particulate matter, tobacco smoke, and heavy metals, can significantly affect hair follicle health, linking them to conditions like alopecia areata and androgenetic alopecia, underscoring the need for further study in this area.

This study analyzed 57 medicinal and cosmetic preparations available in Poland for treating alopecia, finding that finasteride is the most common active ingredient, with many products being in tablet or shampoo form and categorized as prescription drugs and cosmetics.

In a 3-month study, over 90% of healthy women experiencing self-perceived hair thinning reported that the nutritional supplement DEEPLY ROOTED improved their hair growth, volume, and quality, without significant adverse effects.

Zinc deficiency causes early scalp hair damage that recovers slower than skin symptoms.

Nutrition plays a key role in managing skin disorders, with specific dietary changes helping improve conditions like acne, dermatitis, psoriasis, alopecia, and skin cancer.