Gray and white hair, a natural consequence of aging, has been linked to pigment cell death and melanin deficiency. While stress-induced graying has been observed in mice, evidence in humans has been lacking until a 2021. Utilizing a high-resolution scanning technique, researchers found correlations between stress cycles and shifts in hair pigmentation. Notably, hair color returned when stress decreased, offering insights into the malleability of human aging influenced by stress. The study suggests a potential for gray and white hairs to regain color, albeit within certain biological age thresholds.
