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This is Why Stress Turns Your Hair Gray

Whether you view it as a sign of aging or a sign of wisdom, gray hair is inevitable for most people. For some, it happens at a much earlier age than for others. Some of the most common reasons for premature graying include stress, a medical condition such as thyroid disease, vitamin deficiency, nicotine use and genetics. While premature graying may be frustrating, scientists say they have finally figured out how stress plays a role. In a study published in the journal Nature, researchers...