Hydrophobic modifications make human hair less affected by water.
January 2003 in “Research Portal (King's College London)” Hair color affects light reflection, with black hair having higher cuticle angles and lighter hair showing less specular reflection.
May 1995 in “Journal of Investigative Dermatology” Researchers developed a new way to measure gene activity in single hair follicles and found that a specific gene's activity changes with different amounts and times of treatment.
51 citations
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January 2007 in “Animal Genetics” The gene for slick hair in Senepol cattle is located on chromosome 20 and may involve the SRD5A2 gene.
20 citations
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December 1995 in “Journal of Chromatography B: Biomedical Sciences and Applications” Accurate method measures finasteride levels in human plasma using gas chromatography-mass spectrometry.
November 2015 in “Clin-Alert” Some medications and supplements can cause serious side effects, including hair loss, heart rhythm problems, liver injury, and other health issues.
17 citations
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August 2019 in “Archives of Cardiovascular Diseases” Low testosterone in men is a risk factor for a specific heart rhythm issue, and testosterone treatment may help prevent it.
9 citations
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March 2019 in “European Journal of Sport Science” New signs like changes in blood markers, physical symptoms, and behavioral shifts may help detect hidden steroid use in athletes.
8 citations
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February 2021 in “Journal of the American Heart Association” Medical castration in prostate cancer patients can increase the risk of serious heart rhythm problems, so it's important to monitor heart activity during treatment.
4 citations
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March 2017 in “Al-Mi’galaẗ al-sa'udiyaẗ lī-ulum al-ḥayaẗ” Leonuri Herba alkaloids may help treat hormone-induced enlarged prostate in rats.
October 2025 in “Journal of the Endocrine Society” Hormonal imbalances can cause heart rhythm issues, so checking hormone levels is crucial.
September 2024 in “Alcohol and Alcoholism” Alcohol may slightly increase the risk of hair loss, but the link is uncertain.
7 citations
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May 2021 in “Applied sciences” Proteins like BSA and keratin can effectively style hair and protect it, offering eco-friendly alternatives to chemical products.
29 citations
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March 2019 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Older age at onset of alopecia areata leads to less severe and shorter episodes, with most patients experiencing significant hair regrowth.
19 citations
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January 2001 in “Journal of cutaneous laser therapy” The Nd:YAG laser safely reduces facial hair and slows regrowth, with patient satisfaction.
June 2023 in “International Journal of Pharmaceuticals Nutraceuticals and Cosmetic Science” New information shows Valproate may protect the brain and reduce breathing failure risk but can cause liver damage and other side effects, with genetics affecting dosage needs.
January 2021 in “Victoria University Research Repository (Victoria University)” High-intensity interval training (HIIT) is better than moderate-intensity continuous training (MICT) for improving health in overweight women with PCOS.
127 citations
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January 2015 in “Journal of Biological Rhythms” The skin's internal clock affects healing, cancer risk, aging, immunity, and hair growth, and disruptions can harm skin health.
13 citations
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July 1996 in “Annals of Internal Medicine” International medical graduates outperformed U.S. graduates on an internal medicine exam.
13 citations
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July 1996 in “Annals of Internal Medicine” International medical graduates outperformed U.S. graduates on an internal medicine exam.
9 citations
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April 2019 in “Journal of structural biology” Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.
August 2024 in “Biophysics Reviews” Mammal hairs have different internal structures.
42 citations
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February 2016 in “Science” The document concludes that both internal stem cell factors and external influences like the environment and hormones affect hair loss and aging, with potential treatments focusing on these areas.
32 citations
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December 2003 in “Planta” Hypaphorine from a fungus changes the internal structure of Eucalyptus root hairs, stopping their growth.
15 citations
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July 1998 in “PubMed” Fentanyl accumulates differently in hair from internal use compared to external exposure.
5 citations
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May 2020 in “Wiley Interdisciplinary Reviews Developmental Biology” Bone growth is controlled by both internal and external signals, involving stem cells and tissue interactions.
December 2021 in “2021 International Conference on Electronic Information Technology and Smart Agriculture (ICEITSA)” Chemical dyes damage hair's internal structure more than perming, as shown by a special imaging technique.
January 2017 in “Nihon Keshouhin Gijutsushakaishi/Journal of S C C./Nihon Keshouhin Gijutsushakai kaishi” Sunlight and chemical treatments change hair's internal structure differently, needing specific care.
38 citations
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August 2012 in “Biochemical and biophysical research communications” Human leukocytes and beard hair follicle cells have internal daily clocks, and PER1 and PER3 genes may indicate individual circadian rhythms.
36 citations
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July 2016 in “Scientific reports” People's decision-making can be influenced by their internal biological clocks, as shown by gene expression, not just self-reported preferences for morning or evening.