54 citations
,
November 1995 in “The Journal of Clinical Endocrinology & Metabolism” Females with 5 alpha-reductase-2 deficiency have less body hair, no acne, normal fertility, and delayed menarche.
176 citations
,
August 2000 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Hormone treatments in transsexual individuals reduce hair growth and oil production in male-to-females and increase them in female-to-males.
March 2016 in “The Journal of Urology” The discovery of 5α-reductase deficiency in guevedoces led to the development of important urologic medications.
July 2008 in “International journal of psychophysiology” Cyproterone acetate is a safe treatment that causes mild feminizing effects in adolescent trans-girls.
168 citations
,
January 2005 in “Journal of Investigative Dermatology” Male and female mice have different skin thickness, and hormones affect their skin and hair growth differently.
16 citations
,
February 2014 in “Iranian Red Crescent Medical Journal” Polycystic Ovary Syndrome (PCOS) affects Iranian women's feelings of femininity and self-image.
3 citations
,
February 2025 in “Journal of the American Academy of Dermatology” Feminizing hormone therapy increases hair counts and improves hair-related quality of life, while masculinizing therapy may reduce large terminal hairs.
April 2021 in “Journal of Investigative Dermatology” Transgender patients on hormone therapy experience more acne and hair loss, but less skin inflammation.
9 citations
,
July 2023 in “Hypertension” Gender-affirming hormone therapy may increase heart disease risk in transgender individuals.
January 1983 in “Elsevier eBooks” Masculinization in affected individuals occurs gradually after puberty due to hormone changes.
June 2023 in “Clinical and Experimental Dermatology” Gender-affirming hormone therapy changes hair growth in transgender people, with feminizing therapy reducing hair and masculinizing therapy increasing it, but sometimes additional treatment is needed.
205 citations
,
July 2009 in “Journal of Dermatological Science” Male and female skin differ in many ways, which could lead to gender-specific skin treatments.
4 citations
,
January 2022 in “Journal of Menopausal Medicine” Gender-affirming hormone therapy in South Korea aligns with international guidelines and has specific side effects.
4 citations
,
May 2007 in “Oral and Maxillofacial Surgery Clinics of North America” Understanding gender differences and individual patient characteristics is essential for optimal cosmetic surgery outcomes.
1 citations
,
August 2019 in “Environmental Toxicology” Exposure to low doses of finasteride in the womb causes changes in the prostate of both male and female gerbils.
September 2025 in “Medicine & Science in Sports & Exercise” Gender-affirming hormone therapy and surgery affect gut bacteria differently.
11 citations
,
May 2022 in “World Journal of Biological Chemistry” Progesterone may help trans women with breast development and health, but more research is needed.
27 citations
,
February 2020 in “Journal of Cardiovascular Translational Research” Women generally handle heart enlargement better than men, but it's riskier for them if it occurs; hormones like estrogen offer some protection.
Finasteride and dutasteride are not recommended for feminizing therapy due to limited effectiveness and potential risks.
8 citations
,
November 2023 in “Social Science & Medicine” Gendered social factors, not just biology, contribute to sex differences in adverse drug events.
54 citations
,
March 2012 in “International Journal of Andrology” Prenatal pesticide exposure may cause earlier breast development in girls.
April 2016 in “The FASEB Journal” Blocking androgen receptors early in life increases estrogen levels and reduces sexual motivation in male rats.
26 citations
,
September 2005 in “Pharmacology Biochemistry and Behavior” 5alpha-reductase 2 is crucial for proper male brain development and sexual differentiation.
6 citations
,
July 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Finasteride and dutasteride have limited use in feminising therapy and are not recommended for routine use.
71 citations
,
August 2019 in “The journal of sexual medicine” Testosterone treatment effectively causes male physical development in transgender male adolescents but may lead to side effects like acne, higher BMI and blood pressure, lower good cholesterol, and decreased bone density.
February 2026 in “British Journal of Sports Medicine” Transgender women have similar fitness to cisgender women, while transgender men have higher fat and lower strength than cisgender men; hormone therapy affects body composition and strength.
October 2020 in “Authorea (Authorea)” Men and women react differently to opioids, with hormones potentially influencing these differences.
34 citations
,
April 2023 in “Climacteric” Gender-affirming hormone therapy affects health risks and requires careful management, especially as transgender individuals age.
21 citations
,
July 2019 in “Cardiovascular Research” High levels of male hormones in pregnant mice cause heart enlargement and poor heart function in their female babies.
20 citations
,
May 1998 in “PEDIATRICS” African-American girls tend to start puberty earlier than white girls, possibly due to increased androgen production.