research Tryptophan in Human Hair: Correlation with Pigmentation
Men have more tryptophan in their hair than women, and it increases with age and is higher in darker and grey or white hair.
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360-390 / 419 resultsresearch Within-Person Changes of Cortisol, Dehydroepiandrosterone, Testosterone, Estradiol, and Progesterone in Hair Across Pregnancy, with Comparison to a Non-Pregnant Reference Group
Hormone levels in hair change during pregnancy, with progesterone increasing significantly compared to non-pregnant women.
research Temporary Relocation During Rest Periods: Relocation Stress and Other Factors Influence Hair Cortisol Concentrations in Horses
Moving horses to new places can increase their stress levels, as shown by higher stress hormone in their hair.
research Is Increased Constitutive Skin and Hair Pigmentation an Early Sign of Puberty?
Darker skin in 10-year-old girls may be an early sign of puberty.
research Complex X Chromosome Rearrangement Associated with Multiorgan Autoimmunity
A complex X chromosome rearrangement can increase the risk of multiple autoimmune diseases.
research Protein Degradation: Expanding the Toolbox to Restrain Cancer Drug Resistance
Using protein degradation to fight cancer drug resistance shows promise but needs more precise targeting and fewer side effects.
research Relationship Between the Bacterial Community Structures on Human Hair and Scalp
The scalp has more diverse bacteria, while hair has more bacteria and unique types.
research The Physical Properties of Hair Fibers
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research Therapeutic Use of Caffeine in Dermatology: A Literature Review
Caffeine may benefit skin and hair health but more research is needed to confirm its effectiveness in dermatology.
research 4-O-Methylhonokiol Protects HaCaT Cells from TGF-β1-Induced Cell Cycle Arrest by Regulating Canonical and Non-Canonical Pathways of TGF-β Signaling
4-O-Methylhonokiol helps protect skin cells from growth-stopping effects of a protein by regulating growth-related pathways.
research Comparison of Quality Performance of Human Hair Types with Herbal Oils by Analysis Techniques
Grape seed oil improved hair quality the most, followed by rosehip and safflower seed oils, and reduced damage from shampoo.
research Genetic Prediction of Male Pattern Baldness Based on Large Independent Datasets
New models predict male pattern baldness better than old ones but still need improvement.
research Nanoindentation of Hair Cortex and Medulla Regions
research Autophagy Controls the Protein Composition of Hair Shafts
Autophagy changes the protein makeup of hair.
research Identification of Potential Biomarkers for Diagnosis of Patients with Methamphetamine Use Disorder
Gene expression in hair follicles can help diagnose methamphetamine use disorder.
research Enrichment of Specific Hair Follicle-Associated Cell Populations in Plucked Hairs Offers an Opportunity to Study Gene Expression Underlying Hair Traits
Plucked hairs can be used instead of skin biopsies to study hair traits because they contain specific cells related to hair.
research Correlation Between High Hair Cortisol Level and Intracranial Aneurysm Rupture
High levels of cortisol in hair are linked to a greater risk of brain aneurysm rupture.
research Preparation and Evaluation of a Hair Wax Containing Propolis and Eruca Sativa Seed Oil for Hair Growth
The hair wax with propolis and Eruca sativa seed oil promotes hair growth effectively.
research Non-Invasive Biomonitoring of Infant Exposure to Environmental Organic Pollutants in North-Western Spain Based on Hair Analysis: Identification of Potential Sources
Hair analysis shows infants and mothers in north-western Spain are exposed to environmental pollutants, with factors like diet and residence affecting pollutant levels.
research Keratinocyte Stem Cells: Role in Aging
Aging reduces skin stem cell function, leading to changes like hair loss and slower wound healing.
research Author Response: Quantitative Mapping of Human Hair Greying and Reversal in Relation to Life Stress
Hair can naturally regain color after greying, and this change may be linked to stress levels.
research Absence of H2O2 Breakdown in Human Hair Medulla: Implications in Follicular Melanogenesis
Human hair medulla doesn't break down hydrogen peroxide, which may affect hair color formation.
research Scanning Electron Microscopes/Silicon Drift Detector-Energy Dispersive Spectroscopy: An Analytical Tool to Identify Waterborne Microminerals Pickup in Human Scalp Hair Cuticle Due to Water Quality
The method can identify minerals in hair from water, and using coconut oil or conditioner can prevent mineral buildup.
research Vitamin D Deficiency in Non-Scarring and Scarring Alopecias: A Systematic Review and Meta-Analysis
Vitamin D deficiency is common in people with certain types of hair loss, like alopecia areata and female pattern hair loss.
research A Methodological Exploration of Distinguishing Hair Quality Based on Hair Proteomics
Bleaching damages hair by reducing the quality of keratin and keratin-associated proteins.
research Impact of Hair Damage on the Penetration Profile of Coconut, Avocado, and Argan Oils into Caucasian Hair Fibers
Different oils affect hair flexibility and strength, with their impact varying on whether hair is virgin or bleached.
research Stable Isotope Analyses of Carbon and Nitrogen in Hair Keratin of Suspected Man-Eating Wolves from the 1880s
The wolves suspected of man-eating in the 1880s likely ate very little human flesh and mostly consumed a diet similar to herbivores and omnivores.
research Developing Criteria for a Profession to Be Considered as Allied Health in Malaysia: A Qualitative Study from the Malaysian Perspective
Policymakers should integrate criteria like risk of harm, skills, qualifications, and teamwork to define allied health professions in Malaysia.
research Proteins in Scalp Hair of Preschool Children
Hair proteins in preschool children and their mothers could indicate developmental changes and health status.
research Critical Factors in Sample Collection and Preparation for Clinical Metabolomics of Underexplored Biological Specimens
Standardized procedures are crucial for collecting and preparing biological samples to ensure accurate clinical metabolomics results.