4 citations
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July 2024 in “Biomolecules” Women with PCOS may have a higher risk of Alzheimer's disease.
9 citations
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March 2011 in “Clinical and experimental dermatology” The document concludes that anticonvulsants like phenytoin may cause skin reactions by affecting tryptophan metabolism and suggests researching vitamin levels in patients with drug reactions.
222 citations
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January 2005 in “Endocrine journal” Melatonin is important for skin health and protection, and can be made by the skin or applied to it.
21 citations
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September 1990 in “Journal of The American Academy of Dermatology” Taking L-tryptophan supplements might cause a condition similar to scleroderma in some people, which can get better after stopping the supplement and starting corticosteroid therapy.
83 citations
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May 2022 in “Journal of Advanced Research” Enhancing glycolysis in mesenchymal stromal/stem cells boosts their immune functions and therapy potential.
25 citations
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December 2005 in “Molecular Genetics and Metabolism” Taking riboflavin and eating less lysine can help some people with a specific genetic disorder avoid brain damage.
July 2024 in “Behavioural Brain Research” Long-term finasteride treatment reduces depression and brain issues in obese male rats.
31 citations
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January 2011 in “Dermato-endocrinology” Melatonin protects skin against UV damage by regulating various cellular processes.
52 citations
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June 2014 in “PLANT PHYSIOLOGY” Arabidopsis plants adjust gene expression to maintain balance when auxin pathways are disrupted.
11 citations
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November 1990 in “Archives of Dermatology” A woman developed a persistent skin rash and hair loss from a condition linked to her increased L-tryptophan intake.
20 citations
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February 1991 in “Archives of dermatology” High doses of tryptophan may cause eosinophilic fasciitis.
26 citations
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February 2003 in “The journal of investigative dermatology/Journal of investigative dermatology” An enzyme other than TNAP might be responsible for vitamin B-6 metabolism in the skin.
January 2026 in “Annals of Clinical Endocrinology and Metabolism” Restoring NAD⁺ may help with aging and chronic diseases, but more research is needed.
January 2026 in “RSC Advances” Epristeride's metabolism in zebrafish helps improve doping detection methods.
252 citations
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January 2008 in “Trends in Endocrinology and Metabolism” Melatonin in the skin helps protect against damage from stress and UV rays, and could be used to treat certain skin conditions.
18 citations
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January 2004 in “Dermatologic Clinics” Skin problems in older people can indicate hormonal diseases, nutritional deficiencies, or conditions like diabetes, menopause, and HIV.
185 citations
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February 2018 in “Journal of Investigative Dermatology” Melatonin may benefit skin health and could be a promising treatment in dermatology.
3 citations
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June 2025 in “Drug Design Development and Therapy” Targeting glycolysis may help treat PCOS by improving insulin sensitivity and ovarian function.
29 citations
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November 2022 in “Nature Medicine” Genetic variations greatly affect individual metabolism and can impact health and disease risk.
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January 2023 in “Science Advances” The skin's microbiome helps hair regrow by boosting certain cell signals and metabolism.
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May 1996 in “The Journal of Clinical Endocrinology & Metabolism” Different mutations in the 5 alpha-reductase-2 gene were found in affected individuals in the Dominican Republic, suggesting no common ancestry.
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September 2019 in “Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity” A woman with anorexia nervosa improved after treatment for pellagra, reminding doctors to check for this deficiency in patients with eating disorders.
April 2017 in “Journal of Pharmaceutical Investigation” Indole-based compounds improved ovarian health in rats with PCOS, with L-Tryptophan and Tryptophol being most effective.
16 citations
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August 2000 in “Il Farmaco” Men have more tryptophan in their hair than women, and it increases with age and is higher in darker and grey or white hair.
71 citations
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January 2014 in “Journal of Proteome Research” Women with PCOS have different levels of certain fats and proteins in their blood, which could help diagnose the condition.
4 citations
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July 1994 in “Clinics in Dermatology” Eosinophilia-myalgia syndrome, linked to contaminated L-tryptophan supplements, caused severe symptoms and some deaths, with long-term effects in survivors.
April 2007 in “CRC Press eBooks” Certain vitamins in wrong amounts, alcohol abuse, metals, and other toxins can cause serious brain and nerve damage.
249 citations
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April 2002 in “The FASEB journal” Human skin can make serotonin and melatonin.
220 citations
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August 1988 in “Clinical endocrinology” Melatonin may help with sleep issues, depression, and cancer, but more research is needed.
46 citations
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September 2011 in “Journal of Endocrinology” Natural 5α-reduced glucocorticoids might be anti-inflammatory with fewer side effects than current options.