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November 1995 in “The Journal of Clinical Endocrinology & Metabolism” Females with 5 alpha-reductase-2 deficiency have less body hair, no acne, normal fertility, and delayed menarche.
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September 2021 in “Cureus” The rs1128977 gene variant may affect cholesterol and body measurements.
September 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” The reconstructed skin model from hair follicles functions like human skin in processing chemicals and can be used to test ingredient safety.
Gamma radiation enhances the antioxidant properties of Hibiscus rosa-sinensis extract without causing toxicity.
September 2025 in “Sahel Journal of Life Sciences FUDMA” Chemical hair straighteners can severely damage hair and scalp with repeated use.
Finasteride reduces DHT levels and affects gene expression in fish, similar to its effects in humans.
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October 2005 in “Toxicological Sciences” Cigarette smoke condensates increase tumor-promoting markers in mouse skin, especially around hair follicles.
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January 1995 in “Journal American Society of Mining and Reclamation” Excess selenium and sulfur in plants can harm animals, causing symptoms like hair loss and poor reproduction.
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February 2019 in “Journal of oceanology and limnology (Online)” Ecklonia cava extract can reduce the damage and stress caused by hair dye.
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January 2020 in “Neuroscience” Blocking 5α-reductase can harm memory and brain structure, and increase harmful brain changes in male mice used for Alzheimer's disease research.
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June 1998 in “Circulation” Mild essential fatty acid deficiency can cause health issues and is worsened by low-fat diets.
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December 2016 in “Anais Brasileiros de Dermatologia” DHEA reduction may be linked to frontal fibrosing alopecia, but more research is needed.
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August 2005 in “Journal of Pediatric Gastroenterology and Nutrition” The toddler's health issues were caused by too much vitamin A from supplements.
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June 2024 in “International Journal of Drug Delivery Technology” Advanced delivery systems can make dithranol more effective and less irritating for treating psoriasis.
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March 2005 in “Endocrinology” Overexpression of the glucocorticoid receptor in mice causes developmental defects similar to ectodermal dysplasia.
April 2019 in “Journal of Investigative Dermatology” Testosterone affects androgen receptors and lipid storage in cells, while DHEA does not convert to testosterone or affect these receptors in the same way.
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July 1982 in “British Journal of Dermatology” Retinol acetate can reduce the harmful effects of the drug benoxaprofen on white blood cells.
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May 2017 in “Journal of Clinical Oncology” ETC-159 was safe up to 30 mg, but no tumor shrinkage was seen.
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July 2008 in “The Journal of Clinical Endocrinology and Metabolism” Certain mutations in the H6PD gene cause Cortisone Reductase Deficiency by affecting hormone production.
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October 2013 in “Proceedings of the National Academy of Sciences of the United States of America” Mice lacking the PPARγ gene in their fat cells had almost no fat tissue, severe metabolic problems, and abnormal development of other fat-related tissues.
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April 2024 in “Metabolites” Activated protein C helps protect mice from long-term radiation damage.
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August 2014 in “Cell Metabolism” Mitochondrial Complex I reduces inflammation and increases bone breakdown by affecting certain immune cells.
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November 2009 in “General and Comparative Endocrinology” Fadrozole and finasteride change gene expression related to sex hormones and thyroid hormones in frog larvae development.
November 2025 in “The Journal of Dermatology” Chemical leukoderma is temporary, while chemical-induced vitiligo can be persistent and harder to treat.
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August 1978 in “Australian Veterinary Journal” Feeding steers only Leucaena leucocephala causes severe health issues and poor weight gain.
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April 2006 in “International Journal of Dermatology” DFMO may help control hair growth and treat cancer.
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July 2017 in “Scientific Reports” A single amino acid change in the vitamin D receptor can disrupt its function and lead to hair loss.
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May 2019 in “Molecules” These temporary hair dyes may be harmful to human health.