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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.

The pituitary gland functions normally even after losing most SOX2+ stem cells.

Stress hormone CRF can cause hair loss by affecting hair growth cells and hormones.

Muskoxen's qiviut cortisol levels indicate their stress hormone activity over the hair growth period.

The study found no significant difference in stress hormone levels between people with alopecia areata and healthy individuals, suggesting that the disease is not caused by an overactive stress response system.

Human scalp hair follicles can produce hormones and have a system similar to a brain-body communication network.

Neurosteroids play a key role in controlling the brain-adrenal gland activity in pregnant sheep, both in normal and stressful situations.

Low DHEA-S levels might be linked to alopecia areata and could be a potential treatment target.

Long-term use of difluprednate eye drops in dogs can lead to hair loss and hormone imbalance.

DAVID syndrome is a condition with immune system and hormone deficiencies, needing early diagnosis to avoid serious complications.

Levothyroxine is less effective in men with early-onset male-pattern baldness.

Stress hormone CRF causes hair loss and inhibits hair growth in human cells.

Stress hormone CRF causes hair loss and stops hair cell growth.

Changing protein kinase levels in pituitary cells affects calcium flow and beta-endorphin release.

Caffeine may help reduce stress-induced hair loss.

Growth hormone-releasing hormone (GHRH) boosts hair growth and human scalp hair follicles have their own growth hormone system.

A 13-year-old boy with Cushing syndrome has high cortisol levels from a pituitary gland issue and underdeveloped sexual characteristics.

The patient with a misplaced pituitary gland and interrupted pituitary stalk is being treated with hormone replacement.

Hair loss improved after removing pituitary tumor.

A 15-year-old girl with missed periods was diagnosed with a pituitary disorder and treated with hormones and steroids.

A woman's excessive hair growth was linked to a rare case of high testosterone caused by a prolactin-producing pituitary tumor.

Melasma is a skin condition linked to female hormones, genetics, UV exposure, and certain medications, but not to pituitary, adrenal, or thyroid diseases.

Melatonin causes weasels to grow white fur and become reproductively inactive.

Hirsutism is excessive hair growth in women often caused by polycystic ovarian syndrome, and identifying the cause is important for managing associated health risks.

Injecting α-MSH made mice's hair turn black.

Athletes use steroids to enhance performance despite health risks and legal issues, and education on their dangers is needed.

Seborrhea in Parkinson's disease may be linked to hormones, not autonomic impairment.

Prolactin may be important for skin growth and immune function.

High doses of ethynylestradiol in rats caused growth issues, organ changes, and some tumors, but didn't increase overall tumor rates.

Male rats grow hair faster than females, and certain hormones can slow or slightly increase hair growth, but not significantly beyond natural rates.