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

Cushing syndrome often causes low testosterone and sexual issues in men.

Some infants temporarily grow scrotal hair, which usually disappears on its own without any health issues.

The patient's high testosterone was reduced by a medication that suppresses gonadotropin.

Testosterone increases acidification in the vas deferens by up-regulating V-ATPase.

Testosterone boosts physical performance, grip strength, and lean body mass in older men with low testosterone.

Iodine deficiency in lambs causes poor growth, less wool, and delayed sexual maturity.

Male cells need DHT to respond to testosterone, while female cells do not.

Androgens reduce THY1 in skin cells, leading to less fat, more fibrosis, and worse healing in males.

The conclusion is that tritium-labeled testosterone metabolites can be made and are better converted into dihydrotestosterone in skin cells than in prostate tissue.

Epitestosterone may act as a weak antiandrogen and can inhibit an enzyme involved in testosterone metabolism.

Mice without the enzyme HSD17B3 still produce normal testosterone, suggesting they have different ways to make it compared to humans.

Chromosomal differences affect how muscle cells respond to testosterone.

Testosterone increases fluid secretion and aquaporin expression in the vas deferens, which is important for male fertility.

Testosterone therapy improves strength and body composition in older men with low testosterone.

Sex hormone treatments can increase muscle mass in older adults but have inconsistent effects on muscle function and may carry cardiovascular risks.

Testosterone and letrozole treatment speeds up puberty in boys with delayed development.

Exogenous testosterone use may be linked to developing hidradenitis suppurativa.

5α-reductase-2 deficiency causes ambiguous genitalia at birth and affects male sexual development, but individuals often develop male characteristics at puberty.

Finasteride may cause breast enlargement, low testosterone a risk factor.

The document concludes that hormonal biomarkers are key for diagnosing hyperandrogenemia in women and hypogonadism in men.

Testosterone can build muscle and bone without enlarging the prostate when a specific enzyme is blocked.

Steroid cell tumors in the ovary are rare, can produce testosterone causing symptoms, and are mainly treated with surgery.

Hyperthyroidism can hide signs of high androgen levels in females.

An 8-year-old boy's early puberty was caused by a rare hormone-secreting brain tumor, which was successfully treated with surgery.

Insufficient androgen action in male fetuses can cause genital development issues due to genetic mutations or environmental chemicals.

Short-term finasteride use likely doesn't harm male fertility.

Nearly half of the studied men with long COVID had low testosterone, including younger men.

A young girl's hyperandrogenism was caused by an adrenocortical adenoma, diagnosed and treated through detailed evaluations.

Equilibrium dialysis can accurately measure testosterone levels when lab results are inconsistent.