Dr. Marchese shares the toxins or chemicals that cause breast cancer.

Scientists say they now have a near-perfect picture of the genetic events that cause breast cancer.

Dr. Harness shares what causes breast cancer.

I would wager a bet that every single person who slapped that "abortion causes breast cancer" bumper sticker on their vehicle wanted to shame any woman who had an elective abortion (not a spontaneous abortion/miscarriage). If they had an abortion, "Well, you're going to get breast cancer and probably die," and if they had an abortion and later developed breast cancer, "Well, that's what you get for being a slut." If that's the case, though, there is just so much wrong with believing that women who have had elective abortions get breast cancer as punishment, especially when the fact-based science (rather than the pseudoscience of seeking out data to prove one's ideological beliefs) dismisses any link between the two.

Dr. Harness shares what can cause breast cancer despite eating right and exercising daily.

Dr. Maoshing Ni discusses possible causes for breast cancer.

African-American women are more likely to die of breast cancer than white women, and breast cancer is more common in African-American women under the age of 45. These facts may have led to the myth that chemical hair straighteners or relaxers cause breast cancer in African-American women. A 2007 study of about 50,000 African-American women debunked the myth, finding no link between such beauty products and breast cancer.

Advanced age and late menopause are two common causes of breast cancer.

Underwire bras do not cause breast cancer. Only one scientific study has looked at the link between wearing a bra and breast cancer. There was no real difference in risk between women who wore a bra and women who didn't wear a bra. Being overweight does increase breast cancer risk though, and women who are overweight are more likely to have larger breasts and wear a bra. Women who don't wear bras are more likely to be at a healthy weight. This difference in weight is probably why this myth continues to circulate.

On the next page we look at the causes of breast cancer and how breast cancer can be diagnosed.

A friend recently posted on her Facebook profile that she saw the bumper sticker "Abortion causes breast cancer," and she wanted to know if there was any truth in that statement. I, of course, chimed in that no, that statement is not true. Then I wondered, "Who the hell puts a bumper sticker like that on their car?" I put on my investigating hat, and I found a Zazzle store where you can buy as many "abortion causes breast cancer" stickers as you want.I wonder if those who believe abortion causes breast cancer enough to put a bumper sticker on their vehicle actually know that breast cancer isn't just one disease, either? I want to ask them, "Abortion causes what type of breast cancer?" ? ? ? ? , or ?" I guess there isn't enough room on a bumper sticker for things like facts and science, huh?One of the difficulties with anti-cancer organizations is that radical feminists took up the breast cancer cause in the 1980s. They saw this as a means of championing women's rights, so it must have come as a surprise to them when they learned that their dominant concern -- abortion -- caused breast cancer. Once it became apparent that they had a conflict between abortion ideology and protecting women's health, abortion won hands down!I understand that pro-life people are quite fond of their provocative bumper stickers and in-your-face posters (although, to be fair, pro-choice folks are also fans of the bumper stickers and posters). This particular bumper sticker is just so inaccurate and offensive that I'm really shocked that anyone would put this on their car. Women are the ones who have elective abortions, and women (mostly) get breast cancer, so therefore, abortion causes breast cancer? Come on, let's be better than this -- correlation does not equal causation. I mean, men have vasectomies. Men develop testicular cancer. Does that mean vasectomies cause testicular cancer? (No.)Risk Factors What Do Scientists Actually Know About The Cause Of breast cancer? Cancer grows when a cell’s DNA is damaged, but why or how that DNA becomes damaged is still unknown. It could be genetic or environmental, or in most cases, a combination of the two. But most patients will never know exactly what caused their cancer. However, there are certain established risk factors that are associated with breast cancer. Genetic FactorsYou know what can increase your risk of developing breast cancer? Per , not having children can increase your risk (not cause -- big difference): "Women who haven't had a full-term pregnancy or have their first child after age 30 have a higher risk of breast cancer compared to women who gave birth before age 30." That does not mean having an abortion (spontaneous or elective) causes breast cancer.Let's go back to the question at hand: Does abortion cause breast cancer? Does this bumper sticker mean all abortions, including spontaneous abortions (aka miscarriages) or stillborn births? When I was 28, I had a miscarriage/spontaneous abortion. Two years later, I was diagnosed with early stage breast cancer. Which means, according to the "abortion causes breast cancer" line of thinking, my miscarriage caused me to have breast cancer?There are several persistent email and internet rumors about potential causes of breast cancer. One is that wearing a bra, or wearing an underwire bra, causes the disease.