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Estrogen increases blood vessel growth factor production, while testosterone blocks this increase.

Barn owls with smaller black spots have higher testosterone levels, which might be due to genetic effects on hormone regulation rather than hormone effects on coloration.

The exact cause of increased 5α-reductase activity leading to hirsutism in women is still unknown.

The study concludes that a genetic mutation in TFM mice leads to reduced androgen receptor activity, affecting the body's response to male hormones.

Sex hormones, especially estradiol, can change chicken feather shapes and colors.

Male hormones control a specific gene in hamster skin, with different hormones having varying effects.

Hormones affect skin aging, and treatments targeting hormonal balance may improve skin health.

Male genital development is driven by androgen signaling and understanding it could help address congenital anomalies.

Hormones and neuropeptides affect hair growth, with androgens having opposite effects on beard and scalp hair.

Thyroid and gonadal hormones control seasonal hair growth and molting in male European badgers.

Caffeine can potentially treat common hair loss by counteracting hair follicle shrinkage caused by hormones.

The research found that androgens help control blood flow in the rat prostate through a specific binding site.

Certain inhibitors can potentially treat prostate cancer and other hormone-dependent conditions by controlling sex hormone levels in cells.

Testosterone makes the connections in the uterus lining simpler and lowers certain protein levels, which might lead to infertility.

Testosterone can both promote hair growth and cause baldness by affecting hair growth signals.

Oleanolic acid improved hair growth in mice by affecting hair growth pathways and reducing inflammation.

A new gene, JMJD1C, may affect testosterone levels in men.

Taking 1mg of finasteride daily can mildly improve metabolic health and glucose regulation in men with male pattern baldness.

A man with testotoxicosis was fertile despite low FSH levels, suggesting high testosterone may allow sperm production without FSH.

Moxibustion may help improve ovarian function by changing androgen levels.

Finasteride for hair loss may increase the risk of certain cancers and has side effects; better regulation and education on its use are needed.

The research found that anovulatory young women have higher androgen and hormone levels than those who ovulate, suggesting immature hormonal regulation rather than a specific condition.

Some herbs and their components might help treat hair loss by affecting various biological pathways, but more research and regulation are needed.

Hormones like testosterone and estrogen significantly affect hair growth and structure.

Liquorice may reduce testosterone and affect male reproductive organs, potentially helping treat conditions like prostate cancer.

Different substances affect hair and skin cell growth in various ways, with some promoting and others inhibiting cell proliferation.

A subtle androgen receptor abnormality can allow normal male development and sometimes fertility despite partial androgen resistance.

Men with male pattern baldness may not have different hormone levels, but their hair follicles are likely more sensitive to hormones.

Women's ovarian hormones and adrenal androgens change throughout life, affecting hair loss and health.

The human sebocyte culture model has improved understanding of oily skin and acne, and how they can be treated.