Starting chemotherapy for the first time? If you are new to this common cancer treatment, you're probably wondering how chemotherapy works, if you'll lose your hair or even if chemotherapy hurts.

To learn more, we spoke with Mariela Blum Murphy, M.D., a medical oncologist who specializes in gastrointestinal cancers. Here’s what she had to say.

Can wearing underwire bras cause breast cancer? What about using antiperspirants containing aluminum or eating foods made with soybeans?  

The answer to all three of these questions is “no.” We went to Therese Bevers, M.D., medical director of MD Anderson’s Lyda Hill Cancer Prevention Center to understand why and further separate fact from fiction. Here, she debunks these and three more breast cancer myths that you...