What causes grey hair in teenage girls?

While it is uncommon for teenage girls to have grey hair, there are several potential causes:

- Genetics: Some people are more likely to develop grey hair at a younger age due to their genes.

- Medical Conditions: Certain medical conditions, such as anemia, thyroid problems, and alopecia areata, can lead to grey hair in teenagers.

- Stress: Chronic stress can sometimes lead to premature grey hair.

- Nutritional Deficiencies: A deficiency in certain vitamins and minerals, such as vitamin B12, iron, and copper can lead to premature greying.

- Smoking: Smoking can damage the cells that produce hair pigment.