Study: Girls should avoid alcohol until 21


April 13, 2010 6:14:00 PM PDT
A new study finds young women who drink alcohol may put themselves at higher risk of developing benign breast disease, which is a known risk factor for cancer.

Scientists found these women were more likely to have irregular cysts, breast discomfort and itching years later. That can result in lumps that in some instances turn cancerous.

Scientists say teen girls would be wise to totally avoid alcohol at least until they are of legal drinking age.

Scientists speculate that alcohol's effect on estrogen could promote breast tissue growth.