Hair Loss

A New Mechanism of Stem Cell Depletion During Hair Follicle Aging — Donovan Hair Clinic

New studies by Zhang and colleagues suggest a surprising new mechanism for how stem cell exhaustion comes about: some stem cells simply get up and leave the bulge region. They hop out and free themselves into the nearby dermis and by doing so are no longer able to be called upon in the future to participate in hair follicle regeneration. This stem cell depletion was shown to also lead to hair follicle miniaturization.

This study was done in mice so we don’t know if it perfectly applies to humans quite yet. Likely there are some important similarities and a variety of mechanisms of “stem cell exhaustion” are already proving to be true in humans.

The authors went on to show that two genes – FOXC1 and NFATC1 – play a key role in making sure the stem cells don’t leave. Mice generated that lack these proteins develop progressively miniaturized hair and then lose all their hair.

This study opens new doors to understanding the aging process of hair follicles and stem cells in general.

Reference

Zhang, C., Wang, D., Wang, J. et al. Escape of hair follicle stem cells causes stem cell exhaustion during aging. Nat Aging 1, 889–903

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You can follow a few hair hygiene tips to make your hair less likely to fall out: Avoid hairstyles that pull on the hair - Avoid high-heat hair styling tools - Don't chemically treat or bleach your hair - Use a shampoo that's mild and suited for your hair - Use a soft brush made from natural fibers - Try low-level light therapy.

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