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  2. Prenatal hormones and sexual orientation - Wikipedia

    en.wikipedia.org/wiki/Prenatal_hormones_and...

    If SRY exists, then the gonads develop as testes, and commence the production of androgen hormones, mainly testosterone, dihydrotestosterone (DHT) and androstenedione; production of testosterone and conversion into dihydrotestosterone during weeks 6 to 12 of pregnancy are key factors in the production of a male fetus's penis, scrotum and ...

  3. Dihydrotestosterone - Wikipedia

    en.wikipedia.org/wiki/Dihydrotestosterone

    [13] [16] There are far fewer studies evaluating the side effects of 5α-reductase inhibitors in women. However, due to the known role of DHT in male sexual differentiation, 5α-reductase inhibitors may cause birth defects such as ambiguous genitalia in the male fetuses of pregnant women. As such, they are not used in women during pregnancy. [36]

  4. Sexual differentiation in humans - Wikipedia

    en.wikipedia.org/wiki/Sexual_differentiation_in...

    Male development can only occur when the fetal testis secretes key hormones at a critical period in early gestation. The testes begin to secrete three hormones that influence the male internal and external genitalia: they secrete anti-Müllerian hormone (AMH), testosterone, and dihydrotestosterone (DHT). Anti-Müllerian hormone causes the ...

  5. Androgen backdoor pathway - Wikipedia

    en.wikipedia.org/wiki/Androgen_backdoor_pathway

    The pathway from progesterone (P4) to DHT is similar to that described above from 17OHP to DHT, but the initial substrate for 5α-reductase is P4 rather than 17OHP. Placental P4 in the male fetus is the feedstock, that is, a starting point, the initial substrate, for the backdoor pathway found operating in multiple non-gonadal tissues.

  6. 5α-Reductase inhibitor - Wikipedia

    en.wikipedia.org/wiki/5α-reductase_inhibitor

    5α-Reductase inhibitors (5-ARIs), also known as dihydrotestosterone (DHT) blockers, are a class of medications with antiandrogenic effects which are used primarily in the treatment of enlarged prostate and scalp hair loss. They are also sometimes used to treat excess hair growth in women and as a component of hormone therapy for transgender ...

  7. Does Low Estrogen Cause Hair Loss? - AOL

    www.aol.com/does-low-estrogen-cause-hair...

    But an imbalance in hormones — like low estrogen levels — can affect many things, from your drive to, well, your hair. In this article, we’ll dive into the science of hair loss in women and ...

  8. 15 Best DHT Blocking Shampoos in 2024 - AOL

    www.aol.com/entertainment/15-best-dht-blocking...

    Look to Shampoo from Blu Atlas—the best DHT-blocking shampoo—to improve your head of hair daily. Switching out your cheap bottle of ‘poo for a clean, premium product like Blu Atlas is a ...

  9. Pregnancy hormones - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_hormones

    Urine-based pregnancy tests detect hCG in the urine, while blood-based pregnancy tests measure the level of hCG in the blood. [5] The presence of hCG in a woman's body indicates that a fertilized egg has implanted in the uterus and the placenta has started to form. 10 days after fertilization, significant hCG can be detected from woman's blood ...

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