14 citations
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December 2003 in “International Journal of Cosmetic Science” Hair growth and shedding are linked and can be disrupted, causing a delay known as the hair eclipse phenomenon, which is common in certain hair conditions and could lead to new treatments.
92 citations
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September 2013 in “Journal of Investigative Dermatology” BMAL1 and Period1 genes can influence human hair growth.
29 citations
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January 2014 in “Frontiers in physiology” Understanding and tracking our body's natural daily rhythms could help improve heart health.
66 citations
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June 2010 in “Experimental Dermatology” The hair follicle is a great model for research to improve hair growth treatments.
5 citations
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January 2023 in “International Journal of Molecular Sciences” Hair follicles could be used to noninvasively monitor our body's internal clock and help identify risks for related diseases.
3 citations
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May 2016 in “Dermatology Online Journal” Changing estrogen levels during menopause might affect genes related to body rhythms and cause increased hair loss.
137 citations
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January 2000 in “Skin Pharmacology and Physiology” The document recommends using both clinical evaluation and various measurement methods to assess skin greasiness, considering factors like temperature and hormones.
50 citations
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August 1999 in “Experimental dermatology” The control system for hair growth cycles is not well understood and needs more research.
18 citations
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April 2010 in “Langmuir” Human hair surface varies in wettability, showing daily and monthly patterns.
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October 2011 in “PubMed” Shift work causes significant stress for Military Police in Amazon, Brazil.
August 2025 in “Chronobiology International” Irregular sleep and disrupted body clocks can lead to more hair loss in young adults.
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.
March 2025 in “bioRxiv (Cold Spring Harbor Laboratory)” HairTime can predict and adjust human sleep patterns using a hair sample.
21 citations
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September 2013 in “Journal of circadian rhythms” Intense exercise at night can delay the body's internal clock gene expression by 2 to 4 hours.
166 citations
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August 2010 in “Proceedings of the National Academy of Sciences of the United States of America” Scientists found a new, less invasive way to study body clocks using hair cells, which shows shift workers' body clocks don't match their lifestyles.
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.
12 citations
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July 2017 in “Scientific reports” Researchers developed a way to study human body clocks using hair tissue, which works similarly in both healthy and dementia patients.
84 citations
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December 2017 in “EMBO Reports” Circadian rhythms are crucial for stem cell function and tissue repair, and understanding them may improve aging and regeneration treatments.
28 citations
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June 2015 in “Journal of circadian rhythms” An individual's morning or evening preference can predict changes in their body clock gene expression.
49 citations
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April 2016 in “International journal of molecular sciences” Shift nurses show altered body temperature and stress hormone levels, suggesting their body clocks adjust to irregular schedules.
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.
103 citations
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December 2021 in “Journal of biological rhythms” Shift work disrupts the body's natural clock, leading to health problems.
14 citations
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June 2016 in “Hypertension research” New method uses hair follicle cells to estimate human body clock phase, potentially improving sleep disorder diagnosis.
91 citations
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August 2014 in “Development” The circadian clock is crucial for tissue renewal and regeneration, affecting stem cell functions and having implications for health and disease.
51 citations
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January 2004 in “Skin Pharmacology and Physiology” The document explains hair growth and shedding, factors affecting it, and methods to evaluate hair loss, emphasizing the importance of skin biopsy for diagnosis.
January 2026 in “Chonnam Medical Journal” Escin helps keep hair follicles in the growth phase longer.
February 2024 in “medRxiv (Cold Spring Harbor Laboratory)” The study aims to understand how mood, physical activity, light exposure, and seasonal changes affect sleep patterns.
54 citations
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May 1998 in “Urology” Men with enlarged prostates often have more severe baldness.
22 citations
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February 2002 in “Journal of theoretical biology” The model showed that randomness accurately describes individual hair growth cycles and that synchronization can cause large fluctuations not seen in humans.
237 citations
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February 2016 in “Science Translational Medicine” The timing of when the gene Bmal1 is active affects aging and survival, with its absence during development, not adulthood, leading to premature aging.