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Too much male hormone in mothers can negatively affect the sexual behavior of both male and female baby mice.

Testosterone levels influence male behaviors and physical traits, but this relationship is complex and influenced by both internal and external factors.

An alpaca acted like a male and couldn't have babies because of a benign tumor in its ovary that caused high testosterone levels.

Removing a testicular tumor in a dog reduced its aggressive behavior and skin problems.

Masculine facial features may not reliably indicate heritable health, and more research is needed.

The Leechbook shows how hair and sexual health were key to medieval masculinity and some remedies may still be useful.

Finasteride works best in 6 months and lasts 6 years.

The document concludes that understanding health requires considering evolutionary perspectives on reproductive fitness, and recognizing the complexity of factors like diet, testosterone, and sexual orientation.

Testosterone helps prevent skin damage in males by acting through both estrogen and androgen pathways.

Anticancer drugs are increasingly found in surface waters, and their long-term environmental effects are not well understood, requiring better testing methods.

Cocaine impairs male sexual behavior and alters testosterone metabolism in the brain.

Testosterone and its byproducts help support male sexual behavior through different pathways in the brain and body.

Finasteride can have lasting negative effects on brain function and behavior by disrupting neurosteroid production.

Finasteride treatment may cause erectile dysfunction, but stopping it reverses these effects.

MENT could be a better option than testosterone for male hormone therapy and birth control because it works well at lower doses and has fewer side effects on the prostate.

Finasteride treats hair loss but may cause low libido, erectile issues, and depression.

A male with aromatase deficiency improved bone health with estradiol treatment.

Some common medications can harm male fertility, but many effects can be reversed.

Mice lacking steroid 5α-reductase 2 show less aggression and better impulse control.

Early hormones shape sex-specific differences in rat glands.

Testosterone is important for men's sexual function, may help some women's sexual desire, while other hormones and neurotransmitters also play complex roles in sexual behavior.

Bisphenol-A (BPA) increases connections between brain cells and boosts their activity, but it blocks the effects of a male hormone on brain cell plasticity.

Syphilitic alopecia, linked to syphilis and high-risk sexual behavior, improves with penicillin treatment.

Blocking androgen activity in newborn rats affects body weight and appetite-related hormones differently in males and females.

The document concludes that sex hormones are crucial for mammalian reproduction, health, and behavior, and require more research for therapeutic use.

Selective Androgen Receptor Modulators (SARMs) are drugs that can control the effects of androgens in different tissues, potentially having fewer side effects and promising for treating various conditions.

5α-reductase inhibitors increase the risk of sexual dysfunction, especially in men with enlarged prostate.

The document concludes that the risk of sexual side effects from 5-alpha-reductase inhibitors is low and often temporary, but more research is needed on potential permanent effects.

Finasteride changes hormone levels and certain proteins in rats, but these effects can be reversed after stopping the drug.