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Study Links Hair Graying to Stem Cell Stress Responses

11/9/2025

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Summary

Story summary

A study from The University of Tokyo shows melanocyte stem cells (McSCs) respond to DNA damage by senescence-coupled differentiation, causing hair graying.
Exposure to certain carcinogens allows McSCs to retain self-renewal and potentially promote melanoma.
The study links aging tissue and cancer and suggests natural senolysis may protect against cancer.
It reframes hair graying and melanoma as outcomes of stem cell stress responses.

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Story summary

A study from The University of Tokyo shows melanocyte stem cells (McSCs) respond to DNA damage by senescence-coupled differentiation, causing hair graying.
Exposure to certain carcinogens allows McSCs to retain self-renewal and potentially promote melanoma.
The study links aging tissue and cancer and suggests natural senolysis may protect against cancer.
It reframes hair graying and melanoma as outcomes of stem cell stress responses.