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Stress hormone corticosterone blocks a growth factor to slow down hair stem cell activity and hair growth.

Hair growth is influenced by interactions between skin layers, growth factors, and hormones, but the exact mechanisms are not fully understood.

The article explains the genetic causes and symptoms of various hair disorders and highlights the need for more research to find treatments.

Key genes are crucial for Drosophila wing development and could be insecticide targets.

Stem cells help repair tissue mainly by releasing beneficial substances, not by replacing damaged cells.

The LRRK2-G2019S mutation in Parkinson's disease has a lifetime penetrance of 25-35%, and finasteride may help reduce symptoms in adult male Tourette syndrome patients.

Goat reproductive activity and coat growth are affected by light and temperature, with temperature altering prolactin levels and hair growth, but not melatonin or estrus onset.

Finasteride reduces Tourette syndrome symptoms, but results may be limited due to potential biases.

Women with PCOS often have mood disorders and a lower quality of life, and treatment should focus on both physical and mental health.

Finger length ratios are not linked to the number of specific gene repeats affecting testosterone sensitivity.

Fetal cells could improve skin repair with minimal scarring and are a potential ready-to-use solution for tissue engineering.

Finasteride may help reduce symptoms in male Tourette syndrome patients.

Food deprivation increases MST enzyme in the brain, possibly affecting energy balance.

The document describes a woman with familial Parkinson's disease due to a genetic mutation, showing severe symptoms and poor response to treatment, and suggests finasteride may help reduce symptoms in Tourette syndrome.

Hair follicles on the scalp interact with and respond to the nervous system, influencing their own behavior and growth.

Activated carbon fibers from Metaplexis japonica seed hair are highly effective for removing the dye methylene blue from water.

The model showed that randomness accurately describes individual hair growth cycles and that synchronization can cause large fluctuations not seen in humans.

Dog hair grows back in about 14 weeks after being clipped for surgery, and the season doesn't really affect this growth rate.

Estrogen increases blood vessel growth factor production, while testosterone blocks this increase.

Finasteride significantly reduced tics and obsessive-compulsive symptoms in patients with Tourette syndrome.

Stress hormones like cortisol may trigger psoriasis flare-ups.

Irregular menstrual cycles in teenagers are linked to a higher risk of polycystic ovary syndrome and metabolic syndrome.

Glutamic acid helps increase hair growth in mice.

Testosterone significantly affects sexual desire in both men and women, but its impact on women is more complex and influenced by psychological factors.

ERβ has potential in treating prostate cancer and neurodegenerative diseases, but human studies are needed before clinical use.

Human skin's melanocytes respond to light by changing shape, producing pigments and hormones, which may affect sleep patterns.

THAP1 gene changes do not affect DYT1 dystonia; finasteride may help reduce tics and OCD in Tourette syndrome.

A woman with anorexia improved significantly after being treated for scurvy with vitamin C, despite not showing typical scurvy symptoms.

Using rodents for research shows that health problems in the womb can cause diseases later in life.

Melatonin increases cashmere quality in goats but reduces their milk production and doesn't affect their offspring's hair growth.