Hair turns grey or white due to the progressive loss of melanocyte stem cells in hair follicles

the verdict

SUPPORTED

the evidence backs this

Recorded sources

3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Scientific evidence consistently supports the mechanism that hair turns grey or white due to the progressive loss and defective maintenance of melanocyte stem cells within hair follicles.

The analysis

All three retrieved papers provide direct empirical and review evidence showing that hair greying results from the loss, exhaustion, or defective self-maintenance of melanocyte stem cells in the hair follicle. There is no contradictory evidence presented.

Evidence for · 3

Mechanisms of Hair Graying: Incomplete Melanocyte Stem Cell Maintenance in the Niche

Recorded source metadata

Emi K. Nishimura, Scott R. Granter, David E. Fisher. Mechanisms of Hair Graying: Incomplete Melanocyte Stem Cell Maintenance in the Niche. 2005. https://doi.org/10.1126/science.1099593

Demonstrates that hair graying is caused by defective self-maintenance and depletion of melanocyte stem cells within the hair follicle niche.

Source citation format

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More for · 2

Melanocyte stem cells: a melanocyte reservoir in hair follicles for hair and skin pigmentation

Recorded source metadata

Emi K. Nishimura. Melanocyte stem cells: a melanocyte reservoir in hair follicles for hair and skin pigmentation. 2011. https://doi.org/10.1111/j.1755-148x.2011.00855.x

Explains that melanocyte stem cells serve as the vital reservoir for hair pigmentation and links their depletion to hair greying.

Source citation format

Mitochondrial deoxyguanosine kinase depletion induced ROS causes melanocyte stem cell exhaustion and hair greying

Recorded source metadata

Kaiyao Zhou, Gangyun Wu, Rui Dong, Changhao Kan, Lin Xie, Lijuan Gao, Hua Li, Jianwei Sun, Wenxiu Ning. Mitochondrial deoxyguanosine kinase depletion induced ROS causes melanocyte stem cell exhaustion and hair greying. 2025. https://doi.org/10.1186/s13619-025-00242-0

Shows that mitochondrial dysfunction leads to the exhaustion of melanocyte stem cells, directly resulting in hair greying.

Source citation format

The paper trail · every fact has a biography

first checked01 Aug 2026

judged → SUPPORTED · 9201 Aug 2026

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