There is no way to attribute a single diagnosis of breast cancer to the pill. The incidence of breast cancer among women on any hormonal treatment is slightly (very slightly) higher than those who have not taken hormones. Statistically, then, a woman runs some risk with the pill. The same would be true for cardiovascular disease, especially for smokers over thirty-five. But, the vast majority of women on the pill never experience either.
If you run all the data, you will find more disease from pregnancy than from preventing pregnancy. All of life is a gamble - do I accept a Type I error or a Type II error. Each woman, talking with her doctor, must decide what risks she wants to take. Some people choose to live with chronic pain when there are analgesics that would alleviate that pain. Their choice. You took a risk and ended up pregnant. I am happy to hear that you decided to turn it into a happy experience.
Your cautions are well placed but the statement that "she developed cancer because ..." is too simplistic and misleading and I hope it does not seriously affect any fence riders.
Happy Motherhood!!! Teach her well.
Posted: 28 Sep 08:23