Cancer

It seems like the only word I have heard for months is Cancer. Why is that? I remember that I could go years without hearing that word and now it seems like it is part of my vocabulary. My friend passed away from breast cancer in August, my second dad passed away from it in February, my friends mom is battling it right now, other friends know people who are struggling with it and today my most favorite aunt is having a mastectomy and will start the battle. What is going on?