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This study found that stress appears to significantly contribute to the onset and worsening of alopecia areata.

This study found that patients with alopecia had significantly higher mean serum ferritin levels compared to controls, except for those with telogen effluvium, whose levels were not significantly different.

In this study, alopecia areata and vitiligo patients had significantly lower serum BDNF and vitamin D levels, which were inversely associated with depression and quality of life, suggesting a potential combined role in the development of depression.

In this study, researchers found a direct link between autism and the intake of sugar and maltose, while an inverse connection was observed with the intake of total carbohydrate, fructose, and lactose, indicating a potential relationship between dietary patterns and autism.

In this study, no association was found between androgenetic alopecia and increased blood pressure or higher serum aldosterone levels in the examined hospital-based sample from Saudi Arabia.

In this study of patients with alopecia areata, researchers found that although serum vitamin A levels were lower compared to controls, the difference was not statistically significant. However, stress levels were significantly higher in the alopecia areata group.

In this study, no significant association was found between androgenetic alopecia and increased risks of hypertension or hyperaldosteronism among male participants in Saudi Arabia, suggesting that AGA should not be considered an indicator for these conditions.

In this study, researchers found that although vitamin D deficiency was common among patients with non-scarring alopecia, the prevalence of vitamin D insufficiency was also comparable in the control group, suggesting a need for community-level vitamin D fortification.

In this study, researchers observed that individuals with acne vulgaris in the Qassim Region of Saudi Arabia had a significantly higher rate of vitamin B12 deficiency, suggesting a potential association that warrants further investigation.

This study from Athens, Greece observed that urban living may increase prostate cancer risk, while early adulthood sexual activity might inversely relate to this risk.

This study does not support the idea that dietary phytoestrogens affect the risk of testicular cancer in young men.

This study supports evaluating metabolic syndrome and insulin resistance in young males with advanced androgenic alopecia to potentially reduce future cardiovascular and type 2 diabetes risks.

This study found a higher frequency of below normal ferritin and serum iron levels in women with melasma compared to controls, suggesting a possible association with melasma.

This study suggests that age, androgenetic alopecia, metabolic syndrome, and free testosterone levels may significantly affect sexual function in premenopausal women.

This study found that hypospadias in male children is significantly associated with genetic polymorphisms in the Steroid 5 alpha reductase type 2 gene, higher parental age, consanguinity, rural residence, and preterm labor, with maternal age and rural residence being the strongest independent predictors.

This study found that patients with hidradenitis suppurativa had lower trabecular bone score and total hip bone mineral density compared to controls, with a high prevalence of vitamin D deficiency.

This case-control study from Lombardy, Italy, observed that men over 55 taking 5-alpha reductase inhibitors for benign prostatic hyperplasia were hospitalized for COVID-19 at a lower rate than age-matched controls, suggesting potential protective effects against severe disease.

This study observed an association between body iron levels and non-scarring diffuse hair loss in non-menopausal women.

This study found that while women with polycystic ovary syndrome have a higher frequency of dysmenorrhea, the intensity of menstrual pain does not increase.

Increased sunscreen use may be linked to frontal fibrosing alopecia in Hispanic females.

This study found that exposure to phytoestrogens, bisphenol A, parabens, and phthalates was associated with developing idiopathic premature thelarche in girls.

This study found that patients with severe alopecia areata demonstrated reduced corneal sensitivity and increased corneal staining, and exhibited altered topographic and biomechanical eye parameters compared to controls, suggesting a possible increased risk of keratoconus and the necessity for regular ophthalmological exams.

This study found that ocular comorbidities, particularly errors of refraction, are common in patients with Alopecia Areata, but dermoscopic findings are not predictive of these ocular issues.

This study found that alopecia areata is significantly associated with thyroid autoimmunity, but not with clinical or subclinical thyroid disease, in the Pakistani population.

This study observed that women with telogen effluvium had significantly lower vitamin D levels compared to control subjects, suggesting a possible link between vitamin D deficiency and this type of hair loss.

This study found that women with chronic telogen effluvium had significantly lower serum ferritin levels compared to healthy controls, suggesting a potential link between iron deficiency and this type of hair loss.

In this case-control study, individuals with alopecia areata showed significantly elevated levels of inflammatory markers IL-4, IFN-γ, and CRP, as well as reduced serum Folate and Ferritin, suggesting the condition's multifactorial pathophysiology involves immune activation, systemic inflammation, and micronutrient deficiencies.

This study found that while alopecia areata was not significantly associated with metabolic syndrome, patients showed higher blood pressure and fasting blood sugar levels, suggesting a potential increased risk of future metabolic disorders.

This study found that individuals with premature graying of hair in India had significantly lower levels of serum ferritin, vitamin B12, and vitamin D3 compared to controls.

This case-control study found no significant link between androgenic alopecia or hypertrichosis and prostate cancer in Dravidian men from Tamil Nadu, suggesting different prostate cancer risk factors compared to Western populations.