September 2013 in “Molecular Biology” The document suggests that activating autophagy might help with regeneration by removing old and damaged cells.
January 2008 in “Springer eBooks” Thyroid disease can cause hair loss and treating thyroid problems might help with hair disorders.
October 2007 in “Journal of Investigative Dermatology” The document suggests a bacteria plays a significant role in acne rosacea and that white hair can regain color after transplant, meriting more research on reversing grey hair.
July 2022 in “Journal of Investigative Dermatology” The combination of a plant extract and a peptide can increase hair pigmentation and may reverse greying.
November 2022 in “Arab Gulf Journal of Scientific Research” Taurine is important for many body functions and its deficiency can cause health problems.
8 citations
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June 1981 in “Clinica Chimica Acta” 191 citations
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November 2007 in “Journal of Biological Chemistry” Very-long-chain acyl-CoA synthetases and fatty acid transport proteins play key roles in fatty acid metabolism and lipid processing in different tissues.
Lysine carboxymethyl cysteinate (LCC) protects skin from UVB damage by activating autophagy.
2 citations
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April 2025 in “Plants” Lambertianic acid helps prevent muscle wasting.
17 citations
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October 2016 in “Artificial Cells Nanomedicine and Biotechnology” Using tiny fat particles to deliver arginine to hair follicles could be a new way to treat hair loss.
Carnosic acid from rosemary and sage may be a promising natural treatment for hair loss.
Introducing the OTC gene improved symptoms in mice with OTC deficiency.
45 citations
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January 1977 in “Advances in experimental medicine and biology” Hair follicles have an enzyme that converts arginine to citrulline in proteins.
December 2023 in “Research Square (Research Square)” 12-Methoxy carnosic acid from rosemary might be a good natural treatment for hair loss.
125 citations
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February 1971 in “Biochemistry” Specific cross-linkages help make hair proteins stable and strong.
46 citations
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November 1963 in “Journal of Histochemistry & Cytochemistry” Arginine converts to citrulline in hair follicles as proteins harden.
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March 2018 in “Molecules/Molecules online/Molecules annual” L-Cysteine may have health benefits, but its effectiveness is still debated due to limited clinical trial data.
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July 1958 in “Nature” Citrulline was found in hair follicle proteins for the first time.
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December 1942 in “Journal of the American Medical Association” Choline and biotin are important for liver health and preventing certain deficiencies in animals, and more research is needed to understand their benefits in humans.
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August 2020 in “Clinical, Cosmetic and Investigational Dermatology” The hair-growth formula with L-cystine helps protect and grow hair cells.
February 2019 in “Neoreviews” The infant with a urea cycle disorder improved with treatment and a liver transplant.
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August 2007 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Sheep wool follicles absorb different amino acids at various rates and locations, which could affect wool growth based on diet and genetics.
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April 2015 in “Current problems in dermatology” A more sensitive assay was developed to detect enzyme activity converting arginine to citrulline in hair follicles.
2 citations
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August 2024 in “Molecular Genetics & Genomic Medicine” Biotin mega-dose therapy led to dramatic improvement in a newborn with a rare metabolic disorder.
35 citations
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August 2010 in “The American journal of pathology” Researchers created a new mouse model for studying Citrullinemia Type I and similar conditions, showing symptoms and treatment responses like those in humans.
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February 1991 in “FEBS Letters” Introducing the rat OTC gene partially corrected OTC deficiency in mice.
38 citations
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April 2016 in “The Journal of Pathology” Alkaline ceramidase 1 is crucial for healthy skin and energy balance.
19 citations
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July 2015 in “Journal of inherited metabolic disease” Methionine restriction works better than betaine for treating CBS deficiency symptoms in mice.
October 2025 in “JCI Insight” Rosemary extract helps skin heal faster by activating a specific receptor.
18 citations
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April 1989 in “Archives of Dermatology” Iron deficiency can cause hair color changes, which can be reversed with iron supplements.