375 citations
,
July 2006 in “Journal of Investigative Dermatology” Stress can worsen skin and hair conditions by affecting the skin's immune response and hormone levels.
September 2010 in “European Urology Supplements” Opioid use may lower PSA levels, suggesting a possible role in prostate cancer control; PSA testing is useful for detecting prostate cancer; serum triglycerides are not linked to prostate cancer risk; and higher urethral PSA levels may be associated with local hormone activity.
September 2010 in “European Urology Supplements” The document does not confirm if radical prostatectomy is the best treatment for locally advanced prostate cancer.
September 2010 in “European Urology Supplements” PSA testing is a reliable method for detecting prostate cancer, and opioids may lower PSA levels, but triglycerides don't affect prostate cancer risk.
September 2010 in “European Urology Supplements” Higher urethral PSA levels after prostate removal surgery may be linked to more hair loss and higher PSA levels post-surgery.
September 2010 in “European Urology Supplements” Serum triglyceride levels are not linked to prostate cancer risk.
120 citations
,
November 2014 in “Biological Reviews” The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.
31 citations
,
January 2011 in “Dermato-endocrinology” Melatonin protects skin against UV damage by regulating various cellular processes.
127 citations
,
December 2005 in “Experimental Dermatology” Stress can stop hair growth in mice, and treatments can reverse this effect.
72 citations
,
October 2009 in “The FASEB journal” TRH stimulates human hair growth and extends the hair growth phase.
49 citations
,
May 2018 in “Endocrine” Women with regular menstrual cycles and PCOS have linked kisspeptin and LH hormone patterns, unlike those with irregular cycles.
30 citations
,
October 2016 in “Current research in translational medicine” Hair follicles on the scalp interact with and respond to the nervous system, influencing their own behavior and growth.
29 citations
,
August 2017 in “Skin appendage disorders” IGF-1 may affect hair growth and loss, but more research is needed to confirm effective and safe treatments.
29 citations
,
July 2009 in “BJU international” Blocking DHT production more strongly may help control advanced prostate cancer and improve quality of life.
7 citations
,
March 2012 in “Journal of Investigative Dermatology” Some thymic peptides can increase human hair growth, while others may inhibit it.
4 citations
,
August 2017 in “The Nurse Practitioner” Secondary amenorrhea has many causes and requires thorough evaluation to treat and restore menstrual cycles.
3 citations
,
June 2006 in “Expert Review of Dermatology” The document concludes that hair loss is complex, affects many people, has limited treatments, and requires more research on its causes and psychological impact.
November 2025 in “International Journal of Innovative Research in Technology” Hormones significantly affect hair growth and loss, requiring personalized treatment.
December 2024 in “Journal of Neonatal Surgery” Hormonal imbalances, especially high androgen levels and insulin resistance, are linked to worse acne in adult women.
127 citations
,
December 2007 in “Journal of Investigative Dermatology” Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.
9 citations
,
June 2020 in “Animal genetics” Scientists found genes linked to hair length in Brangus cattle that could help breed heat-tolerant cattle.
9 citations
,
November 2007 in “Veterinary dermatology” Boxer and Labrador dogs' hair growth is affected by the tropical climate, but Schnauzers' is not.
2 citations
,
February 2025 in “Applied Microbiology and Biotechnology” Isaria cicadae Miquel rice fermentation extract helps heal wounds and regenerate hair follicles.
May 2026 in “Frontiers in Pharmacology” Dendrobium officinale polysaccharide helps hair regrowth in hair loss mice by affecting local steroid metabolism and hair follicle responses.
989 citations
,
August 2007 in “The Lancet” PCOS is a complex condition with major health impacts, needing more research for better diagnosis and treatment.
305 citations
,
February 2007 in “Hormone and metabolic research” Human skin makes sexual hormones that affect hair growth, skin health, and healing; too much can cause acne and hair loss, while treatments can manage these conditions.
218 citations
,
December 2011 in “Advances in Urology” The document concludes that the 5 alpha-reductase enzymes are important in steroid metabolism and related to various human diseases, with inhibitors used to treat conditions like male pattern baldness and prostate issues.
195 citations
,
May 2003 in “Obstetrics and gynecology (New York. 1953. Online)/Obstetrics and gynecology” Most women with excess hair growth have an underlying hormonal issue, often treated with medication and hair removal methods.
176 citations
,
June 2017 in “Sexual Medicine Reviews” Erectile dysfunction is increasingly common in men under 40, with many physical and psychological causes, and various treatment options available.
125 citations
,
September 2001 in “The FASEB Journal” Stress can cause hair loss by negatively affecting hair follicles and this effect might be reversed with specific treatments.