Textbooks were wrong: Scientists reveal how human hair really grows

A new study overturns what textbooks have taught about human hair growth. Rather than cells at the root dividing and pushing hair upward, researchers discovered that hair is actually pulled upward through coordinated cellular movements within the follicle. Using advanced three-dimensional imaging, scientists identified a hidden cellular motor driving this process. According to ScienceDaily, this finding challenges long-held assumptions about one of the body's most fundamental biological mechanisms.

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