vitamin a may indeed increase the risk of breast cancer

https://books.google.com.au/books?id=qj6ohFIX_SwC&pg=PA56&lpg=PA56&dq=vitamin+a+may+indeed+increase+the+risk+of+breast+cancer&source=bl&ots=Wuer5wQLKi&sig=cGz7xTaNIM_XVM4x06R57-LR6TE&hl=en&sa=X&ved=0ahUKEwiDuKm4tv_NAhUGv5QKHQnPBIcQ6AEIOzAF#v=onepage&q=vitamin%20a%20may%20indeed%20increase%20the%20risk%20of%20breast%20cancer&f=false