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Using the drugs AMD3100 and Tacrolimus together greatly improves skin healing and hair growth after a deep skin cut by increasing stem cells in the wound.

Genetic and environmental factors, like smoking and exercise, affect male hair loss.

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

A natural steroid in the body may protect against eye damage in glaucoma.

Small changes in hormones can significantly impact health, showing the importance of sensitive testing for chemicals that disrupt hormones.

Removing external lipids from hair reduces moisture and increases strength, while removing internal lipids decreases water permeability.

Both genetic and lifestyle factors significantly affect female hair loss.

Using a drug to activate bone marrow stem cells can help the liver regenerate and function better after major surgery in rats.

Male C57BL/6 mice show age-related fluctuations in certain hormones and their ratios in both blood and hair.

Small hormonal imbalances can cause significant health problems, so more sensitive testing for hormone-disrupting chemicals is needed.

Activating TLR3 may help produce retinoic acid, important for tissue regeneration.

A molecule called α-ketobutyrate was found to extend lifespan and improve aging-related symptoms in worms and mice by activating certain cellular pathways and may help develop anti-aging treatments for humans.

Melatonin improves tomato root growth and plant health at certain levels by affecting genes and hormones but can damage roots at high levels.

Seeing trauma causes fear in mice by lowering their natural fear-reducing hormones.

Hemoglobin α acts as an antioxidant in skin cells, especially protecting hair follicle stem cells from UV damage.

Brain-made chemicals can control nerve cell function differently in various parts of a mouse's brain, which may help us understand neurological conditions.

Calcium affects where root hairs grow, but other unknown factors determine their growth direction.

Hair follicle stem cells and skin cells show promise for hair and skin therapies but need more research for clinical use.

Temporary ROS production in cultured human hair follicles promotes growth and stem cell activation.

Taking Saw palmetto and Pygeum africana can change the levels of certain steroids in urine, which could cause confusion in doping tests.

Vitamin D affects Msx1 protein expression and may influence mineralized tissue health.

Researchers created a mouse model for Cushing's syndrome to study glucocorticoid excess and potential treatments.

The dermal papilla is crucial for hair growth and health, and understanding it could lead to new hair loss treatments.

Applying a special compound can promote hair growth without harmful side effects.

Antioxidants can benefit skin health but should be used carefully to avoid negative effects.

Long-term testosterone therapy can cause hormone suppression, affect prostate and heart health, and alter physical characteristics, but does not increase prostate cancer risk and needs more research for full risk assessment.

Wnt signaling is crucial for skin wound healing and reducing scars.

The method effectively detects banned substances in urine for sports antidoping.

Human hair contains various lipids that vary among individuals and help protect the hair.

Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.