September 2023 in “F&S reports” 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.
July 2023 in “Research Square (Research Square)” This study offers evidence suggesting a probable causal role of certain gut microbiota in the development of alopecia areata.
April 2023 in “Journal of Investigative Dermatology” This study found that while nicotinic acid significantly inhibited human sebaceous organoid growth in vitro, the predicted skin concentrations from gut microbiome-derived levels were far below the effective dose, suggesting high oral doses would be necessary for therapeutic effects.
January 2022 in “Journal of family medicine” This case report highlights the challenges of misdiagnosis in women with PCOS and emphasizes the importance of a holistic approach to address interconnected endocrine and reproductive dysfunctions.
July 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” This study observed that Indian women with PCOS had distinct gut microbiome profiles, linking specific bacterial genera to metabolic and hormonal predictors of the condition.
April 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that inducing a leaky gut in mice led to increased gut permeability and decreased expression of protective genes, suggesting a potential link to alopecia areata.
April 2019 in “Journal of Investigative Dermatology” This study found that the gut microbiota in alopecia areata patients showed distinct dysbiosis, with an overrepresentation of Firmicutes and underrepresentation of Bacteroides, aligning with patterns seen in other autoimmune disorders.
April 2019 in “Journal of Investigative Dermatology” Gut microbiota influences the development of alopecia areata.
December 2018 in “International journal of women’s dermatology” This study found significant alterations in the scalp and gut microbiome of patients with alopecia areata compared to healthy controls, suggesting a potential link to systemic inflammation and autoimmune response.
December 2022 in “Frontiers in Microbiology” This study found that individuals with androgenetic alopecia had higher scalp microbiome diversity and more complex scalp-gut microbiome networks than those without, suggesting a link between skin-gut microorganisms and hair loss development.
October 2022 in “Biomolecules” This study found that in male rats, chronic finasteride treatment reduced allopregnanolone levels, which, upon drug withdrawal, correlated with increased pro-inflammatory cytokines and altered neurotransmitter levels.
11 citations
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August 2016 in “Journal of dermatological treatment” This study evaluated the effects of tip cryotherapy on idiopathic guttate hypomelanosis lesions, finding that 82.3% of treated lesions showed significant improvement after four months compared to only 2% of control lesions, with minimal side effects.
1 citations
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December 2025 in “Frontiers in Endocrinology” This review examines the potential role of gut microbiota and its metabolites in polycystic ovary syndrome (PCOS) and highlights the growing interest in this area; it reports no new clinical findings.
This research found significant associations between gut microbiome composition and 14 out of 37 examined health conditions, suggesting that increased microbial abundance often aligns with favorable health states.
February 2026 in “Frontiers in Pediatrics” This case report describes a 7-year-old girl initially misdiagnosed with SMA syndrome, but later found to have a gastric trichobezoar via EGD, highlighting the diagnostic challenges in children with nonspecific symptoms.
October 2025 in “The American Journal of Gastroenterology” In this case report, the researchers diagnosed a large trichobezoar in a 7-year-old girl with gastrointestinal symptoms and weight loss through endoscopy after inconclusive imaging, highlighting endoscopy's importance for accurate diagnosis and the need for surgical and behavioral intervention to prevent recurrence.
September 2025 in “Frontiers in Microbiology” This review discusses targeting gut microbiota modulation as a promising strategy for osteoarthritis prevention and management but reports no new clinical findings.
October 2020 in “Der Hautarzt” This case study demonstrated that off-label tofacitinib treatment led to full regrowth of scalp hair after 18 months in a patient with alopecia areata universalis, following unsuccessful therapies.
January 2018 in “Florence Research (University of Florence)” This study identified significant differences in the fungal gut microbiota between melanoma and vitiligo patients compared to healthy controls and observed varying bacterial abundances associated with melanoma histopathology and vitiligo clinical parameters.
2 citations
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July 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” This study found that oral administration of Thauera sp. strain GDN1 reduced serum androgen levels in male mice by about 50%, suggesting its potential as a probiotic treatment for hyperandrogenism.
1 citations
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July 2025 in “Life Sciences”
February 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This theoretical paper proposes that a subset of Post-Finasteride Syndrome cases may be driven by a gut-derived toxic process involving hydrogen sulphide-producing bacteria, suggesting that the small intestinal microbiome could be a potential target for treating this condition.
February 2026 in “iScience” This study found distinct hair metal profiles in Parkinson's disease patients, with lower iron and copper, higher manganese and arsenic, and explored their link to gut dysfunction and microbiota dysbiosis, suggesting hair metal analysis as a promising diagnostic tool.
December 2025 in “Cureus” In this report, successful management of inherited acrodermatitis enteropathica, a zinc absorption disorder due to an SLC39A4 gene defect, was demonstrated in an infant through zinc supplementation.
January 2025 in “SSRN Electronic Journal” June 2024 in “Current Developments in Nutrition” In this study, KeraGLO, a nutritional supplement with hydrolyzed keratin, was shown to significantly improve skin wrinkle depth, smoothness, moisture, firmness, and hair health in healthy adult females over a 90-day period at both 500mg and 1000mg doses compared to baseline.
39 citations
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October 2013 in “Plastic and Reconstructive Surgery” In this study, researchers found that intestine-derived human alpha defensin 5 enhances wound healing, reduces bacterial load, and promotes hair growth in murine burn wound beds by increasing LGR stem cell migration.
January 2026 in “Frontiers in Pharmacology” This study suggests that cedrol may improve mitochondrial function, gut microbiota, and intestinal barrier integrity, indicating its potential value in treating inflammatory bowel disease.
January 2025 in “Journal of Veterinary Medical Science” In this study, researchers observed that genetically identical cloned dogs, when exposed to different environments like an airport and a police station for two years, exhibited significant differences in toxic mineral concentrations and intestinal microbiota composition, suggesting that environment influences physiological traits even among clones.
14 citations
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January 2020 in “International Journal of Biological Sciences” This study found that ranitidine and finasteride may have cardiovascular and renal protective effects in mice by inhibiting TMAO synthesis and improving gut microbiota composition.