Does drinking a cup of chasteberry tea everyday cause breast cancer? i drink it to regulate my period and reduce breast pain when my period comes

Drinking tea: Drinking chaste berry tea is said to reduce PMS and breast pain in some women. The claim is that it increases circulating Estrogen levels. Limited scientific research has been done to validate and quantify the true effects. Some specialists recommended that Estrogen receptor positive breast cancer patients avoid this herbal supplement.