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The document explains how the male reproductive system works, its role in making testosterone, and how conditions like obesity can disrupt it, leading to low testosterone and fertility issues.

Testosterone replacement therapy can prevent men from fathering children and should not be used by those wanting to stay fertile.

Hormones and sex affect potassium channel gene expression in electric fish, influencing their communication signals.

A boy's early puberty caused by a testicular tumor returned to normal after surgery.

Daily subcutaneous testosterone effectively restores testosterone levels in men.

Women with a certain type of tumor had higher levels of pregnancy hormone and male hormones, which decreased after treatment.

The girl's unexpected pubic hair growth led to a diagnosis different from complete androgen insensitivity syndrome.

Post-finasteride syndrome can cause lasting sexual, physical, and mental health issues with limited treatment options.

A pineal tumor caused a boy's early puberty, which changed from peripheral to central after treatment.

Diagnosing sex development disorders requires combining medical history, physical exams, imaging, lab tests, and genetic data.

Different drugs are used to manage breeding, prevent or end pregnancy, and treat reproductive issues in dogs and cats.

Clomiphene citrate is a cheap and simple treatment for low testosterone that works as well as human chorionic gonadotropin, alone or combined, especially for men who want to keep their fertility.

A man with severe hair loss regrew hair after hormone treatment.

A 19-year-old male with delayed puberty was successfully treated for a condition that prevents normal hormone production.

High levels of fatty acids are linked to increased androgen production and inflammation in women with PCOS, which may affect IVF outcomes.

A new gel helps grow mature eggs in a lab that can be fertilized and develop further.

Lavender oil use in a child may be linked to early puberty signs and elevated tumor marker levels.

Treatment restored normal sexual characteristics and blood condition in a patient with testicular cancer.

New treatments for male hypogonadism are easier to use and target specific tissues to reduce side effects.

A woman with Kallman's syndrome also developed alopecia universalis, a condition not previously linked to Kallman's.

The May issue discussed publishing agreements and four studies on cholesterol in hair, cancer cell changes, hormones in the uterus, and skin protein effects.

Androgens play a complex role in skin conditions like acne and hair loss in women, and normal blood levels don't always show true androgen status.

Female relatives of PCOS patients have a higher chance of showing PCOS symptoms.

A 23-year-old woman's missed periods were caused by a rare genetic disorder treated with hormone patches.

The 18-year-old girl likely has a condition called müllerian agenesis, which caused her to not have a uterus and experience no menstrual periods.

Gene mutations can cause problems in male genital development.

Genetic testing for cancer risk can lead to early and life-saving treatments in people without symptoms.

Excessive hair growth can be assessed by history, exam, and blood tests, and treated with medication like dexamethasone, birth control pills, and spironolactone.

Using anabolic androgenic steroids can cause serious, lasting health problems in many parts of the body.

The L457(3.43)R mutation in the human lutropin receptor causes increased activity and hormone insensitivity, leading to precocious puberty.