You decide!  Visit this website.  Read the clear explanations.  Note the research.  Many people with all the "right credentials" claim there is no causal relationship, while many others with the same credentials say there is.  The fact is, abortion is a multi- billion dollar industry in the US.  Is it possible that the money sways the way "research" interprets the facts?  AND......if there IS a link between abortion and breast cancer, who suffers?