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Hormone levels in hair vary across the head, with the highest concentration of a key hormone linked to hair loss at the top.

Analyzing hair with this method can help understand and monitor scalp conditions and treatment effects.

The COVID-19 pandemic did not significantly change stress levels in preschoolers, but higher-income families' children showed higher stress.

The activity of a specific rat enzyme in the prostate and epididymis is highly dependent on the acidity level.

Diet changes hormone levels in pregnant ewes by affecting metabolism, not placental synthesis.

Testosterone increases hair testosterone levels, stress raises hair cortisol, and relationship status affects hormone levels.

Human skin produces sex hormones like estrogen and testosterone, influenced by ARO and StAR, which may affect skin elasticity and hair growth.

Certain adrenal hormones can strongly stimulate oil gland growth in hamster skin, similar to male hormones.

Changes in prolactin and DHEA levels are not required for the start of mink hair growth cycles.

New targets for making and using brain-synthesized steroids could lead to better treatments for brain disorders and alcoholism.

Plant extracts in shampoo improved hair thickness and density in men with hair loss.

Hair steroid measurement is an effective method to diagnose and monitor CAH in developing countries.

Chesapeake Bay retrievers' hair loss is likely a breed-specific, hereditary condition linked to abnormal steroid levels and distinct skin changes.

PSA levels could help detect illegal steroid use in female athletes but face challenges like cost and PCOS prevalence.

Higher testosterone harms sperm motility, while higher estradiol improves sperm survival.

Neuroactive steroids may affect the risk and treatment of alcohol use disorders.

Dutasteride makes alcohol less sedating and may lead to less drinking in men.

Hair analysis can help diagnose adrenal disorders non-invasively.

5-alpha reductase inhibitors may have additional effects on cancer, mental health, heart health, and hormone levels beyond treating prostate enlargement.

S5αR inhibitors might help treat schizophrenia and other mental disorders but need more research.

Finasteride affects urinary steroid profiles and can potentially hide steroid abuse in sports drug testing.

Stress and alcohol affect brain chemicals differently in rats, mice, and humans, influenced by genetic differences.

Lack or blocking of SRD5a, a key component in hormone creation, can lead to conditions like pseudohermaphrodism and affect hair growth, bone mass, muscle strength, and reproductive health. More research is needed on its regulation from fertilization to adulthood.

11α-Hydroxyprogesterone is changed into different substances by certain enzymes and may play a role in prostate cancer.

Some women with excess hair growth have a hormone condition that can't be diagnosed by blood or urine tests alone.

Flutamide and finasteride reduced sex hormones in pregnant hyenas, but increased them in males.

Hair and nails can show hormone changes during puberty in dogs.

Higher androgen levels during puberty are linked to shorter adult height in boys with Silver-Russell syndrome.

Sex hormones likely don't affect atopic dermatitis in adolescents and adults.

Postmenopausal ovary stromal cells have a unique makeup and limited steroid production, suggesting androgens come from the adrenal gland.