Amphetamine use may not cause hair loss, "geezer" traits are normal aging, not all educated older people are stereotypes, and metronidazole can rarely cause lung disease.
759 citations
,
February 2009 in “Current Biology” Hair follicles are complex, dynamic mini-organs that help us understand cell growth, death, migration, and differentiation, as well as tissue regeneration and tumor biology.
27 citations
,
December 2001 in “Clinical and experimental dermatology” Different hair removal methods have pros and cons, and more evidence is needed to prove laser treatments work.
14 citations
,
March 2014 in “Journal of The European Academy of Dermatology and Venereology” Young adults with hair loss face higher risk of stiff arteries.
3 citations
,
January 2005 in “Biological & Pharmaceutical Bulletin” The peptide GPIGS helps hair cells grow and speeds up hair regrowth in mice.
67 citations
,
July 1985 in “British journal of dermatology/British journal of dermatology, Supplement” Men's thigh hair grows longer and has a longer growth cycle than women's, but arm hair growth is similar between genders.
January 2026 in “Medico Research Chronicles” Homeopathy and exosome therapy improved hair growth and health in a man with advanced hair loss.
June 2025 in “Universal library of medical and health sciences.” External factors like pollution, stress, and poor nutrition can negatively affect hair growth.
15 citations
,
January 2015 in “Skin Pharmacology and Physiology” Parathyroid hormones are important for hair growth, but their use in treating hair loss from chemotherapy is still uncertain.
14 citations
,
May 2011 in “Facial Plastic Surgery Clinics of North America” Laser hair removal is effective for dark hair but needs improvement for nonpigmented or fine hairs.
7 citations
,
July 2018 in “Journal of Functional Biomaterials” A new anti-baldness patch effectively treats hair loss by blocking enzymes linked to the condition.
4 citations
,
July 2014 in “Journal of Investigative Dermatology” Old people have less hair because their hair follicles don't regenerate as well, not because of fewer stem cells, and a protein called follistatin might help reactivate hair growth.
4 citations
,
August 2013 in “Expert Review of Dermatology” Updated treatments for female hair loss include minoxidil, antiandrogens, hair transplants, and light therapy.
June 2021 in “Journal of Emerging Technologies and Innovative Research” Rice water and hibiscus can help improve hair health and growth.
Hair restoration surgery has improved to transplant hair in natural groupings, but it's labor-intensive and can't fully restore normal hair density.
May 2020 in “Journal of Asian Medical Students' Association” Hair loss severity is linked to depression, not anxiety, in Filipino men, with older, less educated men with more hair loss at higher risk.
309 citations
,
May 1993 in “Journal of The American Academy of Dermatology” Horizontal scalp biopsy sections effectively diagnose and predict MPAA, with follicular density and inflammation impacting hair regrowth.
236 citations
,
July 2001 in “Trends in Molecular Medicine” Future hair loss treatments should aim to extend hair growth, reactivate resting follicles, reverse shrinkage, and possibly create new follicles, with gene therapy showing promise.
174 citations
,
November 2002 in “Expert Reviews in Molecular Medicine” Hair loss needs more research for better treatments.
153 citations
,
March 2017 in “Endocrine” Male pattern baldness involves genetics, hormones, and needs better treatments.
124 citations
,
August 1994 in “Journal of Investigative Dermatology” Dexamethasone speeds up hair loss in mice, while cyclosporin A slows it down.
115 citations
,
August 2008 in “The Journal of Clinical Endocrinology & Metabolism” Thyroid hormones help hair grow, reduce hair loss, and increase hair pigment.
100 citations
,
June 2006 in “British Journal of Dermatology” Hair loss severity relates to increased miniaturization in female pattern hair loss.
90 citations
,
October 1996 in “Dermatologic Clinics” Growth factors are crucial for hair development and could help treat hair diseases.
88 citations
,
February 2011 in “Journal of Dermatological Science” Minoxidil helps hair growth by activating the β-catenin pathway.
67 citations
,
October 1997 in “Dermatologic Surgery” The EpiLight Hair Removal System removed about 60% of hair with some side effects, and more research is needed to confirm long-term effectiveness.
64 citations
,
July 2011 in “Dermatologic Therapy” Scalp cooling can prevent chemotherapy-induced hair loss, and certain treatments can speed up hair regrowth, but more research is needed for better treatments.
64 citations
,
November 2008 in “Journal of The American Academy of Dermatology” A new type of rapid hair loss called ADTA usually gets better on its own within 6 months.
61 citations
,
January 2013 in “Indian Journal of Dermatology, Venereology and Leprology” Hair usually grows back 1-3 months after treatment for anagen effluvium, and children with Loose Anagen Hair Syndrome often improve by adolescence.
61 citations
,
September 2010 in “Genomics” The study found that immune responses disrupt hair growth cycles, causing hair loss in alopecia areata.