Why Does Hair Turn Gray?
December 20, 2023
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Gray hair is a natural part of the aging process, but what exactly causes these changes?
Role of Melanin
Hair color is determined by melanin - a pigment produced by melanocytes in hair follicles. Over time, melanocytes reduce melanin production, and hair turns gray.
Hair Growth Phases
Each hair has its own growth cycle. With age, new growing hair contains less and less melanin.
Genetics
The timing of when gray hair appears is largely genetically determined. If your parents grayed early, it may happen faster for you too.
Other Factors
- Stress: Research suggests stress can accelerate gray hair
- Smoking: Smokers may develop gray hair earlier
- Nutrient deficiency: B12 vitamin deficiency can contribute to premature graying
Can It Be Prevented?
Gray hair cannot be completely prevented, but a healthy lifestyle can slow the process.