July 2026 in “British Journal of Dermatology” Taking low-dose oral minoxidil during the day improves hair growth more than taking it at night.
49 citations
,
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.
15 citations
,
October 2012 in “Journal of circadian rhythms” RNA from horse hair follicles can track circadian rhythms non-invasively.
1 citations
,
May 2016 in “The Veterinary Journal” Glucocorticoids affect dogs' skin reactions to histamine, which vary by time of day.
10 citations
,
August 2014 in “Skin research and technology” Sleep, testosterone levels, and a specific enzyme activity affect skin oil production in women.
47 citations
,
May 1999 in “Reproduction” Goat reproductive activity and coat growth are affected by light and temperature, with temperature altering prolactin levels and hair growth, but not melatonin or estrus onset.
12 citations
,
January 2019 in “Sleep medicine” Night shift work disrupts the body's natural clock genes.
18 citations
,
January 2020 in “Ecology and evolution” Genes related to pigmentation, body rhythms, and behavior change during hares' seasonal coat color transition, with a common genetic mechanism in two hare species.
29 citations
,
January 2014 in “Frontiers in physiology” Understanding and tracking our body's natural daily rhythms could help improve heart health.
26 citations
,
March 1986 in “Clinical and Experimental Dermatology” Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.
July 1996 in “Annals of Internal Medicine” Long-term high-dose fluconazole can cause reversible hair loss.
91 citations
,
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.
127 citations
,
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.
75 citations
,
September 2017 in “Developmental biology” The circadian clock influences the behavior and regeneration of stem cells in the body.
12 citations
,
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.
115 citations
,
November 2015 in “The journal of allergy and clinical immunology/Journal of allergy and clinical immunology/The journal of allergy and clinical immunology” Children with atopic dermatitis often have sleep problems, affecting their growth and behavior.
84 citations
,
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.
8 citations
,
March 2014 in “Experimental Dermatology” Light and temperature affect the daily skin function rhythms in hairless rats, with temperature influencing water loss but not skin hydration.
166 citations
,
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.
116 citations
,
May 2013 in “Proceedings of the National Academy of Sciences of the United States of America” Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.
63 citations
,
March 2016 in “International Journal of Molecular Sciences” Children with atopic dermatitis often have sleep problems due to itching and may benefit from melatonin, which helps with sleep and skin symptoms.
62 citations
,
August 2014 in “BMC Endocrine Disorders” New findings explain how genetic changes, body clocks, and certain molecules affect tissue response to stress hormones.
14 citations
,
June 2016 in “Hypertension research” New method uses hair follicle cells to estimate human body clock phase, potentially improving sleep disorder diagnosis.
1 citations
,
May 2025 in “Animal Bioscience” Four genes affect hair follicle density in goats.
The trial aims to understand how obesity and lifestyle affect circadian rhythms in people with schizophrenia and bipolar disorder.
38 citations
,
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.
5 citations
,
November 2009 in “Revista médica de Chile” Hair growth cycles in Chileans vary seasonally, with more hair resting in summer and growing in winter.
1 citations
,
September 2024 in “BMC Ophthalmology” PCOS may increase eye pressure and corneal thickness, affecting eye health.
January 2024 in “Diabetes & metabolism journal” Disrupting natural body clocks increases the risk of developing type 2 diabetes.
December 2025 in “npj Systems Biology and Applications” Cold temperatures can stop human cell circadian rhythms, but warming restores them.