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Why Our Hair Turns Gray
Description
Our hair color is determined by melanin produced by melanocyte cells within the hair follicle, but as we age, their function gradually declines. The graying process occurs when melanocyte stem cells fail to differentiate properly or become "stuck" and cannot reach their designated location, leading to the growth of hair that lacks pigment.
Original title
למה השיער שלנו מאפיר?
צבע השיער שלנו נקבע על ידי המלנין המיוצר בתאי המלנוציטים שבזקיק השערה, אך עם הגיל חלה ירידה הדרגתית בתפקודם. תהליך האפירה מתרחש כאשר תאי גזע של מלנוציטים אינם מתמיינים כראוי או כשהם "נתקעים" ואינם מגיעים למקומם, מה שמוביל לצמיחת שיער חסר פיגמנט.
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