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The Science of Healthy Hair, Hair Loss and How to Regrow Hair
Huberman Lab
The Three Critical Stages of the Life Cycle of a Hair
There are three critical stages of the life cycle of a hair that are relevant to today's conversation. Hormones are the accelerator and the break on each one of those phases. Dihydrotestosterone, which is a derivative of testosterone, causes changes in that bulb region where the stem cells reside. It shortens or halts the antigen phase of hair growth and it extends and promotes the catechine and telogen phase.
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