February 2019 in “PubMed” Methotrexate treatment often causes hair loss.
June 2018 in “The Journal of Sexual Medicine” Finasteride does not negatively affect male reproductive function.
June 2018 in “The Journal of Sexual Medicine” Men with lower education levels are more likely to have erectile dysfunction if they have coronary artery disease.
April 2017 in “Journal of Investigative Dermatology” Cow milk sugars increase fat production and inflammation in skin oil cells.
November 2015 in “Summit (Simon Fraser University)” Surgical stress temporarily changes hair fiber dimensions, returning to normal after four weeks.
December 2014 in “Nicolaus Copernicus University Repository (Nicolaus Copernicus University)” Polyquaternium-7 improves hair condition.
August 2013 in “Fertility and Sterility” High levels of fatty acids are linked to increased androgen production and inflammation in women with PCOS, which may affect IVF outcomes.
January 2009 in “Journal of Jilin Medical College” SDG helps reduce BPH effects in rats.
September 2007 in “Dermatologic Surgery” 3% hydrogen peroxide does not reduce hair graft survival compared to saline.
January 2006 in “Chinese Journal of Aesthetic Medicine” Zinc improves skin flap survival in rats.
January 2003 in “Hepatology” January 1999 in “Proceedings of the British Society of Animal Science” Biotin deficiency may harm hair follicle health and growth in Angora goats.
January 1996 in “International Society of Hair Restoration Surgery” February 1990 in “Pathology, research and practice” PCS rats show significant inner ear damage and zinc deficiency, similar to liver cirrhosis patients.
February 2025 in “International Journal of Molecular Sciences” Alkaloids help fight influenza in animals but need more research for human use.
October 2023 in “Microorganisms” Nirmatrelvir/Ritonavir treatment may lead to a weaker immune response to COVID-19, but doesn't affect the chance of rebound.
91 citations
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March 1996 in “Archives of Dermatological Research” Certain cytokines and growth factors can inhibit hair growth and may affect alopecia areata.
73 citations
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June 2001 in “Endocrinology” Prolactin affects when mice shed and grow hair.
58 citations
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April 1993 in “Developmental Biology” bFGF delays hair growth in mice.
51 citations
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February 2004 in “Environmental Health Perspectives” Control variability makes it hard to confirm low-dose endocrine effects.
45 citations
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December 1994 in “Journal of Nutrition” The type of zinc in a dog's diet affects hair growth and health.
35 citations
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March 2013 in “American Journal of Medical Genetics Part B Neuropsychiatric Genetics” SRD5A2 gene variations affect PTSD symptoms differently in males and females.
35 citations
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May 2011 in “Experimental Dermatology” Aging causes changes in hair follicles, leading to weaker hair growth.
31 citations
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March 1965 in “British Journal of Dermatology” Certain chemicals can change hair growth and color.
28 citations
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January 2003 in “Skin pharmacology and physiology” Melatonin affects skin cell growth differently based on how much and how long it's used.
24 citations
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September 2002 in “Dermatologic Surgery” The place where hair is transplanted can affect its growth and survival rates.
21 citations
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May 2016 in “Progress in Neuro-Psychopharmacology and Biological Psychiatry” Diazepam's effects on anxiety and memory differ between male and female rats due to hormonal influences.
20 citations
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July 2009 in “Experimental and Clinical Endocrinology & Diabetes” Cyclosporin A does not change sex hormone levels.
19 citations
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December 2008 in “Medical Journal of Australia” Baldness does not affect vitamin D levels in men.
16 citations
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April 2009 in “Dermatologic Surgery” The place where hair is transplanted can change its growth rate and length but not its thickness.