hey i dont know the much about it but i have found some data from USA research websites. see it might be helpful to you!
Over the last three decades there have been many studies investigating whether abortion causes or increases the risk of breast cancer. The studies produced conflicting results, so in February 2003 the US National Cancer Institute evaluated these studies to determine the association between abortion and breast cancer. The scientific experts concluded “induced abortion is not associated with an increase in breast cancer risk. ”
This debate over the scientific data arose out of anti-abortion groups attempt to scare women about the risks associated with abortion. For many years, these groups have tried to dissuade women from seeking abortion and instilling fear in women about the association of abortion and breast cancer. The anti-abortion groups relied on poorly designed research studies and circulated misinformation about abortion causing or increasing the risk of breast cancer. The US National Cancer Institute put this debate to rest by examining all the research studies and concluding that abortion does not increase the risk of breast cancer.