Articles tagged with Hair
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Researchers discover that gray hair may be a result of a natural defense mechanism against cancer, where damaged stem cells undergo senescence-coupled differentiation, leading to graying. In contrast, bypassed stem cells can expand clonally and lead to tumor development.
A major albinism gene's exon skipping levels control human skin and hair color diversity. Researchers found that OCA2 exon 10 skipping contributes to hypopigmentation, shedding light on the genetic basis of human pigmentation.
Research at Maharishi International University found that long-term TM practitioners have lower inflammation, slower age-related decline in cognitive function, and reduced cortisol levels, indicating potential benefits for overall health and longevity. The study suggests a protective effect against both stress and aging.
Researchers have developed an embedded 3D-printing technique that allows for the rapid production of fine, continuous, and soft fibers in gel. The method uses a solvent exchange approach to inhibit capillary breakup from surface tension, achieving resolutions as low as 1.5 microns.
Researchers at Nagoya University found that luteolin, an antioxidant in vegetables, can suppress hair graying by preserving endothelins and supporting healthy melanocyte activity. The study suggests luteolin's unique medicinal effect may be a promising candidate for addressing age-related hair graying.
A team of scientists discovered polar bear sebum's anti-icing properties, making it harder for ice to stick. The study sheds light on polar bear ecology and may lead to sustainable anti-ice surface coatings.
A UConn study found that Black adolescent girls experience higher levels of hair dissatisfaction and related depression compared to their peers. The research suggests that targeted interventions, such as positive messaging about hair and texture, may help improve hair satisfaction and reduce depressive symptoms.
Researchers Carsten Ullrich and Deepak Singh have discovered a new type of quasiparticle in all magnetic materials, challenging previous understanding of magnetism. This finding could lead to the development of faster, smarter, and more energy-efficient electronics.
A systematic review and meta-analysis found a slightly higher likelihood of androgenetic alopecia among individuals who consume alcohol, but the association is not statistically significant. The study suggests that further research is needed to clarify whether alcohol impacts AGA risk.
A new type of cationic epoxy photoresist exhibits greater sensitivity to two-photon laser exposure, enabling fast writing speeds and fine features. The material was developed by a research team led by Professor Cuifang Kuang, who achieved lithography speeds of 100 mm/s and resolution of 170 nm.
Researchers analyzed compacted hairs from Tsavo lion museum specimens to find that historic lions preyed on humans, giraffes, wildebeests and oryx. The study provides insights into the ecology and diet of lions in the past and potential human-lion conflicts in Africa.
A case report describes a woman who experienced bilateral blurry vision after using hair dye with aromatic amines. The incident highlights the potential risk of retinopathy associated with certain hair dyes.
A new AI application streamlines hair quantification, allowing for high-resolution data collection on hundreds of hairs in seconds. Researchers tested the method using mouse fur but plan to apply it to human hair, potentially leading to health diagnostics and age assessment.
Researchers found that touch sensitivity declines only in hairless skin regions with age, such as the hands, while hairy areas like cheeks remain sensitive. The study suggests that hairy skin may act as an antenna to transmit mechanical stimuli and preserve touch sensitivity.
A Trinity College Dublin team, led by Professor David Taylor, has developed a machine to study hair splitting using biomechanics. The 'Moving Loop Fatigue machine' recreates the damage caused by combing tangled hair, revealing that split ends split more quickly and generated longer splits.
A new study combines bisphosphonates, commonly used for osteoporosis, with azole antifungals to treat fungal infections. The combination effectively targets dermatophytes and prevents resistance development.
Researchers have developed a method to create and repurpose artificial hairs with magnetic properties, enabling the control of motion at room temperature. The technique involves programming and reprogramming the magnetization of the magnetic particles in the cilia, allowing for changes in their behavior.
Researchers use a vortex fluidic device to improve the shelf life and cleaning ability of organic shampoos. The spun shampoo contains more evenly dispersed oil droplets and glass microspheres compared to the original product, resulting in a better lather and cleaner hair.
A new study from Aarhus University reveals that only 67% of Danes registered with an ectodermal dysplasia diagnosis actually have congenital ectodermal dysplasia. The study identifies key characteristics, including abnormal teeth, skin issues, and nail problems, highlighting the need for collaboration across healthcare disciplines.
A study led by Leopold Eckhart found that the genetic programme controlling keratinized claws originated in a common ancestor of humans and frogs. The research team used the tropical clawed frog as an experimental model and discovered that important hair components, including keratins, share similarities with human hair.
Researchers discovered that wild animal hair undergoes seasonal changes to insulate against extreme temperatures. The inner microscopic details of the hairs change, allowing animals to survive in their environment.
Researchers at NIMS and L'Oréal K.K. create a new hairstyling agent that resists humidity, using hydrogen bonding between PVA and cellulose microcrystals to maintain hair shape in high humidity conditions.
Purdue University researchers discovered that hair care products release potentially harmful chemicals into the air during use, with decamethylcyclopentasiloxane (D5 siloxane) being the most concerning chemical. The study found that inhaling these chemicals can pose health risks to humans and has significant environmental implications.
A new method extracts DNA from cat hair, linking suspects and crime scenes, with potential applications in dog cases too. Researchers found a single cat hair contains usable DNA, which can be sequenced for a more powerful link.
Research found that curling irons and curlers were the most common causes of burn injuries, affecting 68% of injured children under 10. Most injuries occurred at home without hospitalization required.
The team plans to sequence the mitochondrial genomes of 10,000 Pennsylvanians, more than tripling the existing database and providing a crucial reference point for human identification cases. The new database will help forensic experts match DNA profiles to found evidence, improving the likelihood of successful identifications.
A study found that auxin signaling controls root hair elongation in response to nitrogen deficiency, enabling plants to explore soil resources more efficiently. This mechanism provides a new understanding of how plants adapt to low-nitrogen environments and offers potential breeding targets for improving crop nutrition.
The Estee Lauder Companies' New Incubation Ventures has launched a breakthrough prize for innovative active ingredient companies, R&D labs and scientists pushing the boundaries of Indian consumers. The prize program aims to discover and support the next generation of Indian beauty brands.
Researchers found that tightly curled scalp hair provided the best protection from the sun's radiative heat while minimizing sweat. This adaptation enabled human brains to grow to modern-day sizes without conserving water through sweating.
Researchers analyzed cortisol and cortisone levels in over 6,300 individuals to find a strong link between long-term hair cortisone levels and future cardiovascular disease. People with higher cortisone levels were twice as likely to experience a cardiovascular event, especially those aged 57 or younger.
Researchers have developed a simple green process to extract both keratin and melanin from human hair without harsh chemicals or excessive waste. The extracted compounds have antioxidative properties and can help shield against ultraviolet light, making them suitable for biomedical applications.
A new study published in the American Journal of Epidemiology found that chemical hair straighteners may affect a person's ability to become pregnant. Black and Hispanic individuals were more likely than other racial and ethnic groups to use these products, leading to a slight reduction in fertility rates.
New research suggests neural crest cells retain adaptability even after differentiation, enabling them to 'change their mind' and differentiate anew. This hyper-flexibility has significant implications for regenerative medicine, as these cells have immense potential as treatments to replace and repair damaged body tissue.
A recent $800,000 grant from the Missouri Department of Economic Development will train 300 MU students as part-time nurse assistants at MU Health Care. This three-year initiative will create a paid opportunity for nearly 100 MU students each year to earn work experience and reduce the need for student loans.
Researchers have identified properties like curl shape, coils, and cuticle layers that can help distinguish between curly, kinky, wavy, and straight hair. These findings aim to provide a more precise and quantitative classification system for haircare products.
Researchers analyzed DNA from Beethoven's hair to shed light on his chronic health problems, including progressive hearing loss. They found genetic risk factors for liver disease and evidence of a hepatitis B virus infection, which likely contributed to his death.
A study of over 1,300 children aged 9-13 found a significant increase in substance use when combining hair analysis with survey results, nearly doubling the estimated number of child drug users. This suggests that hair analysis is a more accurate method for assessing adolescent substance abuse than self-reporting alone.
Researchers compared genetic codes from 62 animals to uncover the story of human body hair loss. The study found that a set of genes and regulatory regions are essential for making hair, and suggests new ways to recover hair after balding or chemotherapy.
Researchers have developed a continuum theory of micro-hairs, allowing for the study of collective movements and fluid flows. The theory reveals that even random movement is unstable and leads to synchronisation, while perfect unison is also unstable, resulting in specific patterns of movement.
A unique Stone Age burial site in Finland uncovered a child between 3-10 years old, accompanied by bird feathers from a waterfowl or falcon, as well as dog or wolf hairs. The discovery provides valuable insights into ancient burial habits and the use of soil analysis to trace plant and animal remains.
Scientists explore the dynamics of soft materials like toothpaste and hair gel using X-ray photon correlation spectroscopy (XPCS). The technique reveals microscopic dynamics and helps understand properties like viscosity and elasticity. Insights gained can aid in designing consumer products, nanotechnologies, and drug delivery systems.
Researchers from Nanyang Technological University in Singapore have developed a sustainable hydroponic substrate using keratin extracted from human hair. The substrate has been tested with microgreens, leafy vegetables, and seedlings of Arabidopsis and bok choy, showing promising results in terms of water retention and nutrient delivery.
Researchers analyzed individuals with uncombable hair syndrome, a rare condition characterized by dry, frizzy, and wiry hair that cannot be combed flat. The study identified key genetic factors contributing to this anomaly, providing new insights into its causes and potential treatments.
A recent study published in PLOS Global Public Health found a correlation between perceived stress and hair cortisol concentration in Mexican and Icelandic women. The research suggests that cortisol levels, often associated with stress, can be detected in an individual's hair.
Researchers developed a nanocomposite coating method using Langmuir-Blodgett technology to improve wig durability, reducing UV damage, breakage, and static electricity. The new coating provides better coverage than previous methods and can be scaled up for mass production.
A new study found that parabens increase the growth, invasion, and expression of genes linked to cancer in breast cancer cells from Black women. This effect was more pronounced in Black cell lines compared to white cell lines.
A recent study published in the journal Body Image found that young Black girls experience high levels of verbal teasing and unwanted hair touching due to their natural hair. The research highlights the need for greater awareness and understanding of these issues to promote positive body image and self-acceptance among young Black girls.
A new study suggests that supplementing a diet with Ascidiacea, also known as sea squirts, reverses some main signs of aging in animal models. The researchers found that plasmalogens, vital to body processes, decrease with age and contribute to neurodegenerative diseases like Alzheimer's and Parkinson's.
Researchers discovered that mosquito brains use a surprisingly simple mechanism to recognize human odor, involving just two nerve centers. The team identified the specific compounds decanal and undecanal as key components of human scent, which are also present in other mammal odors.
A study published in Scientific Reports found that shelter dog hair cortisol levels increased by one-third after six weeks in the shelter, indicating elevated stress. After adoption, cortisol levels decreased, returning to pre-shelter values. The results suggest that even well-managed shelters can cause stress in dogs.
A team of researchers, led by L. Mahadevan, developed a mathematical model to understand the mechanics of combing and detangling. They found that using short strokes starting from the free end can effectively remove tangles, with an optimal minimum length for each stroke identified.
Researchers discovered that honeybee tongue hairs are hydrophobic, allowing the tongue to bend and reach food in crevices. This unique property enhances durability and flexibility, inspiring design of new materials.
Researchers studied Indriidae lemurs to understand the impact of climate, body size, and color vision on hair evolution, providing a unique window into human hair evolution. The study fills gaps in our understanding of human evolutionary story by comparing non-human primate hair patterns.
Researchers have created a range of permanent hair dyes that avoid the allergenic properties of traditional formulations, producing a range of hues from rosy pinks to deep blacks. The new dyes were found to be less reactive toward proteins and generated a reduced inflammatory response in cells compared to PPD.
Scientists have developed a new technique to extract DNA from the 'cement' head lice that attached eggs to hairs of ancient humans. This method reveals clues about pre-Columbian human migration patterns in South America, allowing for the study of unique samples from mummified remains where bone and tooth samples are unavailable.
A new Rutgers study found that the use of hair products like hair dyes, bleach, relaxers, and mousse is associated with lower levels of sex steroid hormones in pregnant women. Disruptions to these hormones may contribute to adverse maternal and pregnancy outcomes. Socioeconomic variables also influence personal care product use among p...
A new study led by the American Museum of Natural History suggests that the extinct ground sloth Mylodon was an omnivore, contrary to previous assumptions. The researchers analyzed amino acid nitrogen values in fossil samples to determine their diet, finding evidence of meat consumption.
Researchers developed nanoscale insecticidal hair coating for prolonged anti-lice protection, reducing re-treatments and side effects. The coating, formed using halloysite nanotubes, retains its protective properties after washing the animal's hair.
A new microneedle patch containing cerium nanoparticles has been designed to combat both primary causes of baldness: oxidative stress and insufficient circulation. The patch showed faster hair regrowth in a mouse model compared to a leading treatment.
Gender-affirming hair removal procedures were associated with reduced rates of past-month severe psychological distress, past-year smoking, and past-year suicidal ideation. The study analyzed data from the 2015 U.S. Transgender Survey.