This chapter emphasizes the critical role of the integumentary system in animal physiology, detailing its structures, immune functions, and sensory capabilities as crucial for homeostasis, protection, and various physiological processes.
August 2025 in “Nutrition and Health” In this systematic review, researchers linked higher vitamin D and iron levels to reduced alopecia, while increased alcoholic and sugary beverage intake was correlated with greater hair loss, highlighting the impact of diet on hair health.
June 2025 in “International Journal of Nutrology” In this systematic review, various nutrients and diets, such as a plant-based diet and supplements like omega-3 fatty acids, were found to impact tissue regeneration, skin health, and wound healing, highlighting the role of nutrient-sensitive signaling pathways in these processes.
4 citations
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April 2023 in “Autoimmunity reviews” This systematic review and meta-analysis reports that patients with alopecia areata have significantly higher serum levels of IL6 and CRP, and lower levels of vitamin D, compared to healthy controls.
100 citations
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July 2018 in “Journal of The American Academy of Dermatology” This study found that alopecia areata is linked with a higher prevalence of systemic and psychiatric diseases, suggesting that physicians should monitor for these potential comorbidities.
24 citations
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July 1987 in “Dermatologic Clinics” This article reviews various causes of hair loss linked to systemic factors, noting that careful history and examination can lead to accurate diagnosis, but reports no new clinical results.
9 citations
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January 2019 in “Postepy Dermatologii I Alergologii” The skin acts like an endocrine organ, making hormones that affect skin diseases and respond to stress.
5 citations
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December 2024 in “Journal of Cosmetic Dermatology” Vitamin D and zinc may help treat alopecia areata.
4 citations
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October 2023 in “Fertility and Sterility” This review highlights potential negative impacts of certain medications on male fertility, such as hormonal disruption and germ cell toxicity, emphasizing the importance of clinicians being aware of these effects to advise on safer alternatives.
1 citations
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November 2021 in “Translational pediatrics” This meta-analysis reported no significant improvement in muscle strength or mobility with glucocorticoid treatment for progressive muscular dystrophy but observed an increase in adverse effects like acne and emotional irritability.
December 2025 in “Toxicologic Pathology” This study outlines the complex structure and various functions of the skin, emphasizing its role as a barrier against external insults, a sensory receptor, and its importance in vitamin D synthesis.
March 2026 in “Skin Appendage Disorders” 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 systematic review and meta-analysis found that patients with telogen effluvium, primarily females, exhibited significantly lower serum levels of ferritin and vitamin D compared to healthy controls, suggesting trace element imbalances play a crucial role in this type of hair loss.
This study found that telogen effluvium is strongly linked to lower serum levels of ferritin and vitamin D, especially in predominantly female patients.
March 2026 in “International journal of Nutrition Pharmacology Neurological Diseases” This study found that hair loss is common in Saudi Arabia, with prevalence rates between 13.8% and 71.3%, and is often untreated despite key risk factors like stress, vitamin D deficiency, and COVID-19.
In this study, researchers found that patients with alopecia areata displayed higher systemic inflammatory markers and lower vitamin D levels compared to healthy controls, yet they exhibited similar cardiovascular risk profiles, with no association between inflammation and cardiovascular risk or alopecia severity.
October 2024 in “Molecular Nutrition & Food Research” 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.
September 2023 in “Journal of the American Academy of Dermatology” Methylprednisolone treatment helps most alopecia areata patients, but young age, extensive hair loss, and low vitamin D can affect results.
5 citations
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May 2023 in “Frontiers in immunology” This review discusses how environmental factors like lifestyle, nutrition, and vitamin deficiencies may influence autoimmune diseases such as MS, SLE, and AA, highlighting associations with vitamin D levels and dietary interventions, but notes a lack of conclusive evidence for their roles in disease pathogenesis.
September 2007 in “The American Journal of Gastroenterology” This case report illustrates that Systemic Lupus Erythematosus can lead to severe malabsorption, weight loss, and small bowel inflammation, requiring recognition for effective treatment and improved outcomes.
70 citations
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June 2023 in “International Journal of Molecular Sciences” In this review, researchers explored how air pollutants increase oxidative stress and inflammation in human skin, affect vitamin D synthesis, and interact with the skin microbiota, also discussing AhR/Nrf2 as a potential target for treating pollution-related skin conditions.
1533 citations
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October 2008 in “Endocrine reviews” This research highlights that engineered mice lacking the vitamin D receptor show multiple health issues similar to human vitamin D deficiency, underscoring the widespread impacts of the vitamin D endocrine system.
276 citations
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April 2003 in “Molecular endocrinology” This review explores the diverse physiological roles of the vitamin D endocrine system, discussing current research on receptor structure, transcription details, murine models, and alternative receptors, but reports no new findings.
This study observed that vitamin D deficiency is linked to a weakened immune system and may promote autoimmune inflammation in individuals with diffuse alopecia, where hair loss happens throughout the scalp.
This review discusses various management methods for adolescents with PCOS, highlighting lifestyle modifications and pharmaceuticals like metformin and oral contraceptives, but reports no new clinical results; the authors emphasize individualized treatment plans.
12 citations
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January 2016 in “Journal of Clinical and Investigative Dermatology” This study examines how the Severity of Alopecia Tool score was used to assess Alopecia Areata in patients while excluding systemic conditions that might affect vitamin D levels, but reports no new clinical results.
January 2019 in “Frontiers in neurology” This study reports that a clinical nutrition program may improve fatigue, anxiety, brain fog, and various symptoms in a 40-year-old female with systemic erythematous lupus.
June 2025 in “Naunyn-Schmiedeberg s Archives of Pharmacology” This literature review reports that certain herbal remedies, such as rosemary, green tea, and ginseng, have shown promise in promoting hair growth and improving hair density, though variability and study design limitations highlight the need for more rigorous research.
August 2021 in “Oxford University Press eBooks” This chapter discusses various skin functions and structures involved in protection, immune response, and homeostasis, but it reports no new research findings.
3 citations
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July 1992 in “Clinics in Dermatology” This article reviews the role of vitamin D and its metabolites in regulating calcium homeostasis and highlights their effects on the intestine, kidney, bone, and parathyroid gland, without reporting new clinical results.