August 2025 in “Frontiers in Nutrition” Leucine levels may affect hair loss after bariatric surgery.
2 citations
,
October 2023 in “Animals” Lacto-fermentation changes amino acid profiles in bovine colostrum, but results are inconsistent.
11 citations
,
November 1966 in “Experimental Biology and Medicine” Hair diameter can indicate protein status in malnourished children if sample location is controlled.
2 citations
,
January 1981 High temperatures and certain chemicals can significantly change the amino acid content in human hair.
2 citations
,
July 2011 in “AFRICAN JOURNAL OF BIOTECHNOLOGY” Seven genetic variations in sheep's DSG4 gene are linked and affect wool traits.
November 2005 in “PubMed” The hairless gene in Kunming mice is important for hair and skin, and shows genetic variations.
6 citations
,
July 1975 in “Archives of Dermatology” Rapid weight loss from dieting and hormonal injections can cause significant hair loss in women.
5 citations
,
December 1978 in “PubMed” Malabsorption can cause skin issues like pigmentation changes and hair loss, which improve with treatment.
66 citations
,
December 1999 in “Journal of Investigative Dermatology” New mutations in the hairless gene may cause hair loss and affect bone development.
15 citations
,
January 1981 in “Neonatology” Amino acid levels in milk increase with protein and align with key growth stages in Macropus eugenii.
9 citations
,
July 2011 in “Scientific Reports” Changes in the HR gene have influenced hair growth and may lead to hair loss conditions in humans.
4 citations
,
February 2022 in “Frontiers in molecular biosciences” Chronic stress in mice changes skin metabolism and gene expression, leading to hair loss.
10 citations
,
January 2010 in “PubMed” Adjuvants, diet changes, and laser therapy may improve male pattern hair loss.
5 citations
,
February 1998 in “Polymer” Human hair keratin has a 40% α-helix structure that changes to a random coil in 8 M urea.
24 citations
,
April 2016 in “Experimental Dermatology” Chemical treatments like dyeing, perming, and bleaching damage hair by altering amino acids and lipids.
5 citations
,
October 2007 in “PubMed” Amino acids in conditioners improve hair strength, hydration, and color retention.
April 2019 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” Hair straightening at pH 1.0 improves alignment but weakens hair more than pH 2.0.
5 citations
,
February 2022 in “Biophysical journal” The model shows that filament flexibility and amino acid differences affect how fast intermediate filament proteins assemble.
1 citations
,
June 2016 in “Experimental Dermatology” Metabolomics can identify hair damage markers, but its use in creating treatments is uncertain.
10 citations
,
October 2016 in “Journal of Biomolecular NMR” Solid-state NMR can effectively study keratin structure and treatment effects in fur.
9 citations
,
January 1959 in “The journal of nutrition/The Journal of nutrition” Higher potassium intake may protect against hair loss and liver fat in lysine-deficient rats.
4 citations
,
January 1976 in “Archives of Dermatological Research” Metabolic disorders can cause hair structure defects and growth issues, but amino acid levels in hair remain normal.
2 citations
,
January 2022 in “Anais brasileiros de dermatologia/Anais Brasileiros de Dermatologia” Chemical hair straighteners can cause scalp and hair damage, but long-term effects are unclear.
December 2025 in “Scientific Reports” Gut microbiota and metabolic pathways may play a key role in PCOS development.
March 2016 in “The Korean Society of Beauty and Art” MSG-based hair hardener improves hair thickness, strength, and wave retention after perms.
January 2002 in “Agritrop (Cirad)” The hr gene is linked to hair loss in Valle del Belice sheep.
30 citations
,
September 2018 in “International Journal of Cosmetic Science” Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.
January 2026 in “International Journal of Nutrology” Hair loss is common after bariatric surgery, especially vertical sleeve gastrectomy, and is linked to emotional distress.
20 citations
,
July 2017 in “Scientific Reports” A single amino acid change in the vitamin D receptor can disrupt its function and lead to hair loss.
5 citations
,
September 2013 in “The Journal of Dermatology” Researchers found a new mutation in the HR gene causing hair loss and skin bumps in a Pakistani family.