I tried to ignore the pain and the feeling of being “off.” But one day, after struggling through a few minutes of yet another bad run, I stopped in mid-stride, pulled out my phone, and called my doctor.

Your immune system can detect and destroy bacteria, viruses, fungi, parasites or unhealthy cells such as cancer cells. So why do you still get sick?

All families have their traditions. In ours, we tend to have big families, with numerous siblings – and a lot of cancer. My father was diagnosed with cancer when he was 44 years old.

Many cancer patients who are in treatment wonder what will happen if their treatment stops working. Here Ellis Levine, MD, Chief of Breast Medicine at Roswell Park Comprehensive Cancer Center, discusses how different factors can affect the options available.