Both changes in genes and environmental factors like diet and toxins can significantly affect the growth of skin appendages like hair, but how these factors interact is still unclear.
August 2007 in “Microscopy and Microanalysis” Hair fibers break by cuticle cell slipping, shape changing, cuticle fraying, and surface cracking when stretched under specific conditions.
153 citations
,
June 2015 in “GenomeBiology.com” The environment around the time of conception can change the VTRNA2-1 gene in a way that lasts for years and may affect disease risk.
80 citations
,
November 2017 in “New Phytologist” Roots adapt to uneven environments by changing growth and gene expression.
74 citations
,
January 2013 in “Expert Opinion on Biological Therapy” The conclusion is that hair growth can be improved by activating hair cycles, changing the surrounding environment, healing wounds to create new hair follicles, and using stem cell technology.
64 citations
,
April 1972 in “American Journal of Clinical Nutrition” Hair chromium levels reflect nutritional status after standard washing.
20 citations
,
May 2020 in “Experimental Dermatology” Aging scalp skin contributes to hair aging and loss, and more research is needed to develop better hair loss treatments.
16 citations
,
May 2017 in “Journal of cosmetic dermatology” An unhealthy scalp can damage new hair, but using ZPT shampoo can improve hair health.
January 2026 in “International Journal of Biological Macromolecules” Small KP peptide improves hair without reducing agents, while larger proteins need them for better results.
May 2024 in “JAMA Dermatology” Oral contraceptive use may increase the risk of frontal fibrosing alopecia in women with a specific CYP1B1 gene variant.
Fetal environments contain various chemicals that may disrupt hormones.
April 2023 in “Journal of Investigative Dermatology” Being allergic to linalool, a common fragrance ingredient, might contribute to developing frontal fibrosing alopecia.
November 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” Linalool in personal care products may contribute to hair loss by damaging hair follicle stem cells and triggering harmful immune responses.
Linalool in personal care products may worsen frontal fibrosing alopecia by damaging hair follicle stem cells and triggering harmful immune responses.
103 citations
,
October 2003 in “Birth Defects Research” Both genes and environmental factors like chemicals may contribute to the increase in hypospadias, but the exact causes are still unclear.
88 citations
,
April 2011 in “Archives of Dermatology” Type 2 diabetes, bacterial scalp infections, and tight hairstyles like braids and weaves are linked to a higher risk of a scarring hair loss condition in African American women.
71 citations
,
January 2012 in “PloS one” The conclusion is that genetic differences affect how the cochlea heals after hair cell loss, which may challenge the creation of hearing loss treatments.
50 citations
,
September 1998 in “Ecotoxicology and Environmental Safety” High thallium contamination severely harms small mammal populations, causing health issues and low population density.
37 citations
,
August 2020 in “Cosmetics” Biodegradable masks are needed to reduce pollution and meet eco-friendly demands.
21 citations
,
September 2008 in “Brain Research” Neurosteroids in the brain can increase or decrease seizure risk in mice.
16 citations
,
October 2024 in “Frontiers in Environmental Science” Synthetic cosmetics can harm health and the environment.
11 citations
,
March 2016 in “Cell cycle/Cell cycle (Georgetown, Tex. Online)” Old hair follicles grew better when moved to a young environment.
7 citations
,
January 2012 California Ground Squirrel hair can indicate environmental health by showing element accumulation.
4 citations
,
October 2020 in “Animal Bioscience” Using cans with beans improves Rex rabbits' growth, meat quality, and hair follicle density.
3 citations
,
March 2024 in “Frontiers in Cell and Developmental Biology” Prenatal and postnatal environments both affect PCOS development and gut microbiota in mice.
3 citations
,
June 2023 in “ACS sustainable chemistry & engineering” The study found a green method for strengthening hair works on all hair colors and is eco-friendly.
1 citations
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April 2021 in “Journal of Advances in Environmental Health Research” Dental amalgam releases harmful mercury, posing health risks, and should be replaced with safer materials.
December 2025 in “SKINdeep” Low humidity harms skin health by damaging the skin barrier and increasing inflammation.
April 2021 in “Journal of Advances in Environmental Health Research” Dental amalgam releases harmful mercury, posing health risks, and should be replaced with safer materials.
February 2020 in “The Pharmaceutical Society of Japan”