What does it mean if you have white hair at the age of 13?

Having white or gray hair at the age of 13 can be a result of several factors, including genetics, health conditions, or nutritional deficiencies. Some individuals may inherit genes that cause premature graying, while others might experience it due to stress or medical issues like vitiligo or thyroid disorders. It's often advisable to consult a healthcare professional to rule out any underlying concerns. In many cases, it's simply a variation of normal and not a cause for alarm.