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This study reviewed multiple research articles and found that patients with telogen effluvium, primarily women, had significantly lower levels of serum ferritin and vitamin D compared to healthy controls, suggesting a role for trace element imbalances in hair loss.

This study observed that the intestinal absorption of selenium varies depending on its chemical form, with selenomethionine being absorbed efficiently and selenium as selenodiglutathione or selenodicysteine being absorbed faster than selenite.

This study found that patients with age-related cataracts had significantly lower levels of manganese, selenium, vanadium, and zinc in their serum compared to healthy controls, with low serum selenium and zinc levels showing an independent association with an increased risk of cataracts.

This documentation reviews the absorption, metabolism, and excretion of selenium and its compounds, highlighting the complex interactions and health implications, but reports no new clinical results.

This study found that women with diffuse alopecia exhibited deficiencies in several trace elements, including sulfur, iron, and potassium, while men showed deficiencies in calcium, sulfur, and zinc.

This review highlights cobalt's essential role in vitamin B12 metabolism and its biomedical applications but also warns of health risks from high levels and environmental contamination, discussing remediation methods like phytoremediation.

This perspective highlights the ongoing debate on the efficacy and safety of micronutrient supplementation for hair loss, emphasizing that, without documented deficiency, such practices may lead to toxicities and unintended medical consequences, warranting further research to clarify their role.

This review discusses the link between selenium levels in the environment and related diseases in China, reporting no clinical results; the authors highlight the need for clearer geographic risk and remediation strategies.

This study found that magnesium and iron deficiencies were significantly associated with menstrual cycle disorders in women of reproductive age, suggesting these deficiencies may contribute as potential factors in these disorders.

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.

In this study, isotretinoin treatment for acne vulgaris was associated with changes in plasma phosphorus, potassium, magnesium, and zinc levels, potentially affecting kidney function and contributing to side effects like fatigue and dry skin.

This study found that sodium and potassium hair levels may serve as sex-specific indicators, with slight differences in copper and iron content between males and females, particularly during the female reproductive period.

This study observed that low levels of calcium and magnesium in blood serum were associated with health issues like hair loss and anxiety among participants from urban and rural Pakistan.

This study used X-ray fluorescence to analyze elemental and heavy metal contents in Senegalese powdered milk, finding potential safety concerns with excessive calcium in certain samples and significantly high potassium levels in one, suggesting ongoing monitoring is crucial for consumer safety.

This study found that Carbon Quantum Dots effectively detected and quantified Co²⁺ ions and methylcobalamin in tap water with high sensitivity and recovery rates between 95% and 105%.

This study found that women with telogen effluvium had significantly lower serum copper and zinc levels compared to controls, suggesting these deficiencies may be associated with the condition.

This study observed low levels of zinc, copper, iron, and selenium in the plasma and hair of Ukrainian adults, suggesting a need for better nutritional interventions; it highlighted higher hair zinc levels in individuals with COVID-19 history potentially due to more frequent zinc supplementation.

This study found that sodium and potassium levels in scalp hair might be sex-specific indicators, while females had slightly higher copper and iron levels, particularly during the reproductive period.

Many Korean preschool children have low zinc levels, which may affect their growth, and zinc supplements could help.

This study found no significant difference in serum ferritin, zinc, and 25-hydroxy vitamin D levels between women with chronic telogen effluvium and healthy controls, although suboptimal levels were common in both groups.

This article discusses zinc deficiency in animal nutrition and highlights the need for zinc supplementation in livestock diets; it reports no new study results.

This paper reviews chemical analysis methods for trace elements in human hair and supports a no-wash policy due to challenges in distinguishing between endogenous and exogenous element sources.

This study found that the concentrations of major inorganic elements in human scalp hair increase with age up to 25 years, and calcium and magnesium concentrations are significantly associated with sex in individuals over 20.

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 narrative review highlights the crucial role of micronutrients and gut microbiota in thyroid function and suggests that nutritional imbalances may contribute to thyroid dysfunction or diseases.

This review discusses the dual role of selenium in human health, highlighting both the dangers of deficiency and potential toxicity from over-supplementation, without presenting new clinical results.

This review found that deficiencies or imbalances in micronutrients like vitamin B, vitamin D, iron, and zinc may play a role in androgenetic alopecia and could be modifiable risk factors for prevention and treatment, though evidence varies.

In this study, Bushman women in various life stages had higher levels of iron and zinc in their hair compared to Bantu and American mothers, with iron deficiency anemia being rare among them.