Is smoking while on the shot a health risk?

“Hello, I am 15 years old and i have been on the depo provera shot for almost a year now but i have been smoking for about 5 or 6 months ….. what sort of effect would that have on me by now considering the fact that i’m already at risk for breast cancer?

A: “Research shows that smoking while on depo does not increase a woman’s risk for breast cancer. However, it may have an affect on your bones, though the exact effects of Depo Provera on your bones are not fully understood, not smoking, getting enough calcium and exercising are good for your bones.”