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

Too much zinc can cause hair loss and weaken the immune system.

The researchers reported that zinc carbonate nanoparticles stabilized with polyvinylpyrrolidone did not show local irritant or skin-resorptive effects in preclinical tests on rabbits and rats.

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 the combination of lithium and zinc demonstrated significant transcriptomic rescue in three datasets, with consistent results across methodologies, suggesting its potential targeting of DP-specific pathways.

This study found that the combination of lithium and zinc produced a statistically significant transcriptomic rescue across three datasets, with the strongest signal observed in a DP-enriched model, suggesting potential efficacy in targeting DP-specific pathways.

This narrative review explores existing evidence on zinc's impact in certain immune-related, gastrointestinal, dermatological, and metabolic disorders, considering clinical and observational studies to assess zinc supplementation's clinical relevance.

In this study, researchers highlight the importance of correcting selenium and zinc deficiencies as part of a comprehensive management strategy for patients with autoimmune thyroiditis complicated by alopecia, as these elements play key roles in thyroid hormone biosynthesis and hair follicle function.

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 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 found that zinc supplementation at 2.00 g/camel/day improved hair growth in lactating camels but did not affect milk yield or hump morphology, while 0.50–0.75 g/camel/day enhanced weight gain and hair development in calves.

In this study, zinc supplementation at 2.00 g/camel/day improved hair growth in lactating camels but did not affect milk production, while for calves, doses of 0.50–0.75 g/camel/day enhanced growth and hair development.

This case study documents a boy with zinc-responsive acral hyperkeratosis improving significantly after zinc supplementation, suggesting it could result from inadequately treated acrodermatitis enteropathica.

In this research, the authors found that green-synthesized zinc oxide nanoparticles (GS-ZnONPs) exhibited antibacterial activity against Staphylococcus species isolated from alopecia patients, but also showed cytotoxic effects on human dermal fibroblast cells at a 400 mg/mL concentration.

This study found that tea polyphenol–zinc significantly improved intestinal barrier function and reduced liver inflammation and oxidative stress in mice with diquat-induced damage.

In this study, women with hair loss were found to have significantly lower levels of vitamin D and ferritin compared to healthy controls, suggesting that these micronutrients may play a role in hair health and could be important in nutritional assessments for hair loss conditions.

This study found that women with chronic telogen effluvium had significantly lower levels of zinc, calcium, vitamin D, and ferritin compared to healthy women without hair loss, suggesting that monitoring and restoring these micronutrients may be crucial in managing this condition.

In this study, Pilopeptan® Intensive, a nutritional supplement containing hydrolyzed collagen, Group B vitamins, and zinc, was found to significantly improve hair parameters in telogen effluvium patients, with sustained benefits observed posttreatment, although mild side effects were reported by some participants.

In this study of 200 pregnant women in District Mardan, researchers found a high prevalence of zinc deficiency, with 63% having low zinc levels, alongside dietary and lifestyle factors that may influence maternal and fetal health.

This study found that women with polycystic ovary syndrome had significantly higher serum lactate dehydrogenase levels and lower levels of cortisol, dopamine, zinc, and vitamin D3 compared to healthy controls.

The ZIP13 variant is linked to abnormal hair quality.

In this study, zinc oxide nanoparticles combined with Carbomer940 hydrogel significantly accelerated wound healing and hair growth in Balb/c mice, showing a 56.9% increase in wound closure rate compared to MEBO ointment and control groups, without causing damage or infection.

This study developed a novel zinc-releasing hydrogel, Zn-Gel, which promoted wound healing by controlling zinc ion release and demonstrated excellent compatibility and efficacy in enhancing cell proliferation, blood vessel formation, and tissue regeneration in vitro and in vivo settings.

This study found that sheep with deficiencies in zinc, copper, and vitamin A exhibited symptoms like weight loss, skin disorders, and abnormal hematological and antioxidant enzyme levels compared to healthy sheep, suggesting that dietary supplementation of these nutrients could prevent these health issues.

This case report describes a 33-year-old woman whose symptoms improved significantly after vitamin D and zinc supplementation, highlighting the importance of diagnosing and managing deficiencies to enhance quality of life in young women.

This study assessed zinc concentrations in breast milk from 58 Palestinian lactating women and found that breast milk zinc levels varied with demographics such as age, urban living, employment status, and intake of zinc-rich drinks.

In this study conducted at a pediatric clinic in southern Jordan, researchers found that picky eating is linked to lower serum zinc levels, lower weight for age, and deficiencies in hemoglobin and vitamin D, indicating a broader range of nutritional deficiencies than just zinc deficiency.

This study examined the zinc levels in Kurdish adults experiencing hair loss to understand its relationship with four types of hair loss, although specific results were not reported in the abstract.