39 citations
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October 2018 in “Aesthetic surgery journal” Injectables can feminize or masculinize a transgender person's face, but more research is needed for best practices.
Finasteride worsens alcohol withdrawal in female mice but eases it in male mice.
Finasteride causes reproductive changes in male rats.
October 2024 in “Journal of the Endocrine Society” Estrogen alone may effectively suppress testosterone in some transfeminine individuals.
71 citations
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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.
July 2025 in “Reproductive Biology and Endocrinology” Early androgen exposure affects hormone receptor expression in adult female rats' brains, but not in males.
51 citations
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August 2012 in “Differentiation” Mouse genital development depends on male or female hormones for specific features.
10 citations
,
August 2020 in “International Journal of Andrology” 5α-reductase inhibitors like finasteride may not be effective or safe for transgender individuals, and more research is needed.
6 citations
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April 2019 in “Endocrinology and Metabolism Clinics of North America” Testosterone therapy for transmasculine individuals is generally safe with medical supervision, improves mental health, and has mixed effects on physical health.
11 citations
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May 2022 in “World Journal of Biological Chemistry” Progesterone may help trans women with breast development and health, but more research is needed.
8 citations
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August 2015 in “Endocrine”
January 2024 in “Biology of sex differences” Dihydrotestosterone makes arteries stiffer in female mice by reducing estrogen receptor expression.
1 citations
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September 2016 in “Plastic & Reconstructive Surgery Global Open” Facial Feminization Surgery is effective and safe, with minimal complications.
11 citations
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November 2022 in “Journal of Endocrinological Investigation” Hormonal treatments can change hair and skin in transgender people, but may not fully achieve desired results.
122 citations
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July 1990 in “Teratology” Finasteride exposure in pregnancy causes genital abnormalities in male rats.
1 citations
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January 2015 in “Elsevier eBooks” Certain pesticides and fungicides can interfere with male hormone functions, potentially causing reproductive issues in male rats.
1 citations
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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.
October 2024 in “Journal of the Endocrine Society” Estrogen alone can lower testosterone in some transfeminine people.
22 citations
,
September 1994 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride reduces dihydrotestosterone, increases testosterone, and may treat hirsutism in women.
3 citations
,
April 2019 in “Human & Experimental Toxicology” Finasteride causes harmful organ changes in female mice.
25 citations
,
September 2014 in “Pharmacotherapy” Hormone therapy can improve mental health and quality of life for people with gender dysphoria, but long-term effects need more research.
September 2024 in “International Journal of Molecular Sciences” High doses of testosterone disrupt hormone levels and receptor expression in the uterus, affecting fertility.
204 citations
,
May 2014 in “The Journal of Sexual Medicine” Hormone therapy for trans individuals is effective and generally safe in the short term.
9 citations
,
July 2023 in “Hypertension” Gender-affirming hormone therapy may increase heart disease risk in transgender individuals.
April 2015 in “The FASEB Journal” Blocking androgens at birth reduces sexual motivation in male rats.
Cyproterone slightly inhibited hair growth in castrated mice, while tamoxifen significantly inhibited hair growth in castrated mice but not in normal mice.
January 2018 in “Elsevier eBooks” 5α-reductase-2 deficiency causes ambiguous genitalia at birth and affects male sexual development, but individuals often develop male characteristics at puberty.
November 2022 in “Journal of the Endocrine Society” A transman experienced lasting virilization symptoms after stopping testosterone, which were resolved with estradiol treatment.
September 2025 in “Medicine & Science in Sports & Exercise” Gender-affirming hormone therapy and surgery affect gut bacteria differently.
32 citations
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September 2011 in “Journal of Neuroendocrinology” Inhibiting 5α-reductase during late pregnancy shortens gestation, reduces litter size, and harms memory in rat offspring.