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This study describes a method to estimate endogenous hormone production by neutralizing an endogenous hormone with an oppositely acting hormone.

In this study, researchers observed that estrogen and its receptors play a crucial role in hair growth and control, with notable sex-dependent differences in human scalp hair follicles.

This systematic review suggests that current evidence does not support routinely discontinuing gender-affirming hormone treatments before surgery, especially testosterone and spironolactone, due to limited data on related perioperative risks.

This case report found that a dog's progressive alopecia and prostatitis were caused by ingesting a transdermal estradiol cream, emphasizing the need to identify exogenous estrogen sources during evaluation.

This article reviews how various hormones may affect female sexual function and provides recommendations for diagnosing and treating endocrinologic sexual difficulties, but it reports no new clinical results.

Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.

This study found that dutasteride may help prevent enteric neuronal damage in an animal model of Parkinson's disease, highlighting its potential for drug repurposing to address neuroinflammation.

This study found that bilateral orchiectomy allows most transgender women to stop anti-androgen medications, with 91.7% discontinuing them post-surgery and 25% reducing estrogen use.

Randomized trials reported that testosterone therapy improved sexual function in postmenopausal women with hypoactive sexual desire disorder, particularly those who had undergone oophorectomy, with reversible and well-tolerated side effects.

This study concluded that anabolic-androgenic steroids negatively impact male reproductive health, including reduced testosterone production, impaired sperm production, and increased risk of sexual dysfunction and metabolic issues.

This study developed a new analytical method to identify a wide range of endocrine disrupting compounds in full-term amniotic fluid, revealing diverse substances with potential endocrine activity.

This article discusses the paradoxical effects of valproic acid on hair, reporting both drug-induced hair loss and the potential for hair growth when used topically, but presents no original research findings.

This review discusses the complex relationship between melasma and factors like female sex hormones, genetics, and ultraviolet light exposure, but reports no new clinical findings.

This study concluded that there was no consistent association between endogenous sex hormone levels and atopic dermatitis in the populations studied.

In this study, topical estrogens and corticosteroids were associated with decreased telogen rates in 52% of androgenetic alopecia patients, suggesting potential clinical improvement, though the role of corticosteroids remains unclear.

This study suggests that estrogen regulates vitamin A metabolism in skin tissues in a sex-dependent manner, which may have implications for treating acne, hair loss, and skin immunity.

In this study, researchers found that oestrogen did not increase adrenal androgen secretion in children with premature adrenarche or in adolescents with gonadal dysgenesis undergoing oestrogen replacement therapy.

This correspondence highlights a study on early pubertal development in young girls, noting that early pubic hair and breast development in African-American girls is likely due to increased androgen production, not estrogen or exogenous causes.

This study found that local synthesis of 17β-estradiol and 5α-dihydrotestosterone, combined with specific stimulation patterns, is crucial in determining the direction and strength of long-term synaptic effects in the hippocampal CA1 region of male rat slices.

This review examines the negative effects of anabolic-androgenic steroid use on the male reproductive system, including impaired testosterone production, sperm production issues, and adverse metabolic consequences without reporting new clinical results.

This article reviews the use of cyproterone acetate for conditions like prostate cancer and sexual disorders, highlighting its effects on libido but reporting no new specific trial results.

This study describes a new method using high-resolution mass spectrometry for analyzing multiple steroids in human scalp hair, with newborn hair showing the highest steroid concentrations among examined age groups.

This article discusses the potential mechanism by which 5α-reductase inhibitors might offer protection against SARS-CoV-2, emphasizing possible roles of dehydroepiandrosterone and its impact on nitric oxide bioavailability, but reports no new experimental results.

This study highlights that lower testosterone in men and higher testosterone in women are linked to increased risks of metabolic syndrome and type 2 diabetes, with associated skin diseases indicating potential cardiovascular complications.

This study describes molecular mechanisms explaining how sex and stress steroids rapidly modulate dendritic spine formation in hippocampal neurons, suggesting recovery-like effects under steroid-depleted conditions compared to intact conditions.

In this study, patients with testicular feminization syndrome showed limited anabolic responsiveness to dihydrotestosterone, potentially due to reduced affinity of nuclear receptor sites for androgenic steroids rather than defective testosterone conversion.

This article reviews studies on thyroid influence on hair growth, noting varied results, including accelerated growth in some normal and underfed rats after thyroid administration, but reports no clinical results.

This study found that testosterone replacement, with or without finasteride, did not lead to significant cognitive improvements over 36 months in healthy older men without prior cognitive impairment.

This study concluded that a regimen of transdermal estradiol and oral medroxyprogesterone acetate effectively reduces hirsutism while minimizing side effects in women with polycystic ovary syndrome.

This article discusses the impact of estrogens on skin aging, highlighting the potential benefits and unresolved effectiveness of alternatives like phytoestrogens and selective estrogen receptor modulators; it reports no new clinical results.