Human hair affects millimeter radiowaves due to its keratin content.
March 2026 in “Food Science and Biotechnology” Blue honeysuckle fruit extract helps hair grow by activating a specific signaling pathway.
December 2011 in “British Journal of Dermatology” As women age, they experience changes in hair density and volume, face challenges in distinguishing normal hair loss from disease, and have limited access to treatments for hair issues.
January 2026 in “Skin Appendage Disorders” UV dermoscopy helps detect white hairs in children more effectively.
33 citations
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January 2017 in “Psychoneuroendocrinology” Hair dyeing and washing frequency do not affect hair cortisol levels.
1 citations
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July 2017 in “Skin appendage disorders” A 9-year-old Hispanic girl has Uncombable Hair Syndrome, which may improve with age and biotin treatment.
December 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” Redheaded people have higher levels of a vitamin D precursor, suggesting red hair may be an adaptation for better vitamin D synthesis in areas with less sunlight.
46 citations
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December 2000 in “Seminars in Cutaneous Medicine and Surgery” Laser and light treatments offer quick, long-lasting hair removal for large areas.
16 citations
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January 2010 in “Springer eBooks”
116 citations
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December 2013 in “European journal of endocrinology” Combining liraglutide and metformin helps obese women with PCOS who didn't lose weight on metformin alone to lose more weight.
6 citations
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April 2016 in “Journal of the Formosan Medical Association” Metformin improved insulin resistance and BMI in overweight Taiwanese women with PCOS, and a 2-hour insulin test may be a good screening tool.
March 2026 in “Current Research in Diabetes & Obesity Journal” Skin conditions can signal diabetes and insulin resistance.
January 2022 in “Clinical Cases in Dermatology” Hypothyroidism can cause hair loss, which is often reversible with treatment.
June 1997 in “Australasian Journal of Dermatology” Researchers found new hair and nail genes, how hair reacts to UV, differences in white and pigmented hair growth, nerve changes in alopecia, treatments for baldness and alopecia, a toenail condition linked to a genetic disorder, and that nail fungus is more common in people with psoriasis.
January 2026 in “International Journal of Cosmetic Science” Hair vibrancy involves how hair looks and feels, helping create better hair products.
17 citations
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March 2012 in “Journal of biological chemistry/The Journal of biological chemistry” Hairless protein affects hair follicle structure by regulating the Dlx3 gene.
July 2001 in “Pediatrics in review” The girl's increased hair growth and other symptoms were due to a hormone-secreting ovarian tumor, which was successfully treated with surgery.
January 2026 in “International Society of Hair Restoration Surgery”
August 2025 in “Aesthetic Cosmetology and Medicine” Blue light can damage hair and scalp, leading to hair loss.
1 citations
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March 1991 in “PubMed” Naevoid bundle hair is an unusual hair growth pattern where multiple hairs fuse together.
29 citations
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January 2013 in “The journal of investigative dermatology/Journal of investigative dermatology” P-cadherin is crucial for hair follicle pigmentation but not skin pigmentation.
September 2015 in “Research Portal (King's College London)” Human hair movement is affected by its inner structure and chemical treatments.
67 citations
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August 2013 in “International Journal of Cosmetic Science” Hair greying is caused by oxidative stress damaging hair follicles and melanocytes.
November 2025 in “Communications Biology” Human hair contains many different molecules that change along its length, influenced by personal care products.
November 2005 in “Nature Reviews Molecular Cell Biology” The protein hairless is important for hair regrowth because it stops the protein wise from blocking the hair cycle.
35 citations
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September 2003 in “Archives of dermatology” Tiger tail bands in hair are caused by wavy hair fibers with melanin, unlike straight fibers in normal hair.
Hair can naturally regain color after greying, and this change may be linked to stress levels.
March 2026 in “Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials” Bleaching and UV exposure significantly damage hair.
Dark hair with a red beard likely evolved for camouflage, not attraction.