Age-Dependent Measurements of Amino Acids in Human Hairs: A Longitudinal Study
July 1997
in “
Archives of Gerontology and Geriatrics
”
Research cited in this study
2 / 2 resultsresearch Arginosuccinic Aciduria in a 4-Year-Old Girl: Neurological Symptoms and Hair Abnormalities
The girl had a rare disorder causing mental and physical symptoms, with weak hair and unclear neurological issues.
research Hair Amino Acids: Normal Values and Results in Metabolic Errors
Hair amino acid levels can indicate metabolic disorders.
Related Community Posts Join
6 / 1000+ resultscommunity Odd Hair Growth (Possibly More Than Genetics?)
A 23-year-old user shares their hair regrowth journey, questioning if genetics or other factors are at play. They use Rogaine, finasteride, vitamin B12, biotin, Thera M Plus, and derma stamping, and seek advice on their regimen and hair growth patterns.
community Im shedding more short hairs??
A 16-year-old experiencing hair thinning noticed a shift from shedding long hairs to shorter hairs, while using Vitamin D, biotin supplements, ketoconazole shampoo, and improving diet. They are questioning if the short hairs indicate regrowth or androgenetic alopecia (AGA).
community How cooked am i? (M17)
A 17-year-old is concerned about hair loss and shares photos for opinions. A user responds that the hair looks normal but is hard to assess from the images.
community Do these baby hairs normally turn into longer hairs with time?
A 27-year-old male has been using topical minoxidil for over 8 months and added finasteride in January 2026, noticing new baby hairs. Users suggest these baby hairs will likely grow longer, indicating promising progress.
community 18M progression pt.3 (6 months)
User started balding at 16 and began treatment at 18, using RU58841, minoxidil, derma rolling, and peptides. After 6 months, they experienced significant hair regrowth and are happy with the results.
community Hair (and eyebrow) regrowth journey (23 y/o). Around 1 year difference
A 23-year-old shares their hair and eyebrow regrowth journey, attributing success to a routine involving Minoxidil, Dutasteride, vitamins, biotin, and fish oil, alongside improved lifestyle habits. They report no side effects from Dutasteride and minor itchiness from Minoxidil, noting significant improvements in appearance and satisfaction with the results.
Similar Research
5 / 1000+ resultsresearch Age-Related Changes in Hair Shaft Protein Profiling and Genetically Variant Peptides
Genetically variant peptides are reliable for forensic identification despite age-related changes in hair proteins.
research Simultaneous RP-HPLC-DAD determination of dansyl amino acids in chemically treated human hair
A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.
research Investigation by Imaging Mass Spectrometry of Biomarker Candidates for Aging in the Hair Cortex
Certain molecules in hair change with age and could be used for cosmetic treatments.
research Hair Amino Acids: Normal Values and Results in Metabolic Errors
Hair amino acid levels can indicate metabolic disorders.
research Morphologische und biochemische untersuchungen am Haar bei gestörtem Aminosäurestoffwechsel
Metabolic disorders can cause hair structure defects and growth issues, but amino acid levels in hair remain normal.