Why do human eye colors change as we age? Can eye color shift again in adulthood after changing during childhood or teenage years?
Context This question explores the phenomenon of eye color change in humans, particularly the shift from lighter shades in infancy or childhood to darker shades in later years. It also questions the possibility of further eye color changes in adulthood, considering that changes occurred during the individual's developmental years. The question seeks a scientific explanation for these observed changes and whether such changes are possible beyond teenage years. Simple Answer Eye color depends on melanin, a pigment, in the iris (colored part of the eye). Babies often have less melanin, leading to lighter, often blue, eyes. As you grow, your body might make more melanin, darkening your eyes. Most eye color changes happen in the first few years, but some can happen later. After your teenage years, it's rare, but possible for eye color to change due to certain health conditions. Detailed Answer Eye color is primarily determined by the amount and distribution of melanin, a pigment als...