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research Zinc deficiency or genetic mutations?—A case report of hair heterochromia in the context of MC1R genetic mutations

January 2024 in “Australasian journal of dermatology (Print)”

In this case study, researchers documented a Chinese boy with hair color changing to red and identified MC1R genetic mutations as the cause, rather than zinc deficiency, enhancing our understanding of hair heterochromia due to genetic factors.

Study of MC1R and SLC24A5 Gene Diversity in Global Populations: Evaluation of Evolutionary and Environmental Aspects

research Estudo da diversidade dos genes MC1R e SLC24A5 em populações globais: avaliação de aspectos evolutivos e ambientais

April 2017

In this study, a clear pattern of selective sweep was observed for the SLC24A5 gene, with high linkage disequilibrium and low haplotype diversity, but no clear correlation with UV radiation intensity was found.

research Genetic Variation at the MC1R Locus and the Time since Loss of Human Body Hair

152 citations , January 2004 in “Current anthropology”

Humans lost body hair relatively recently in evolution.

research Grey, curly and short-haired Swiss Holstein cattle show genetic traces of the Simmental breed

2 citations , September 2020 in “Schweizer Archiv für Tierheilkunde”

This study found that Swiss cattle exhibiting rat-tail syndrome are heterozygous for genetic variants linked to pigmentation and color dilution, likely due to Holstein introgression in the Simmental breed.

research Evolution in action: highlighting a role for the Agouti gene in development?

March 2011 in “Pigment Cell & Melanoma Research”

This study found that changes in the expression of the Agouti gene contribute to the pale pigmentation in beach mice, with implications for melanocyte development and localization.

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community 28M 5MG MIN 0.5MG DUT DAILY - DO. NOT. FEAR. THE. SHED

116 upvotes 1 week ago

A user shared their positive experience with hair regrowth using daily minoxidil and dutasteride, despite initial shedding. They noticed significant progress around month 4 and encouraged others to be patient with the process.

community PSA: Caffeine and Hair Transplants

31 upvotes 2 years ago

A user shared their experience with a hair transplant, emphasizing the importance of avoiding caffeine 7 days before the procedure. Ignoring this advice led to reduced effectiveness of the numbing agent, causing significant discomfort during the transplant.

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Hair System Specialist
Jane Genesi
Marlton, PA, United States

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Jane Genesi