# New laboratory research from Stellenbosch University suggests Rooibos may counteract the activity of estrogen in breast cancer cells. Estrogen is often described as a kind of driver of breast cancer growth, because many breast cancer tumours carry receptors that respond to it. A senior lecturer in biochemistry at Stellenbosch University, Nicky Verhoog, says because so many breast cancers are sensitive to estrogen, the possibility that Rooibos might help block its effect is significant:
Rooibos extracts demonstrate protective effects in preliminary breast cancer research [SOUND]
ENG VerhoogOnRooibos