45-year-old breast cancer activist Kate Rackham, known as "Teacher With Cancer," passed away after battling incurable breast cancer.

45-year-old breast cancer activist Kate Rackham, known as "Teacher With Cancer" on social media, passed away after battling incurable estrogen-receptive breast cancer. Diagnosed at 39 without any risk factors, she raised awareness by starting the Fighting to be Heard Foundation and sharing her journey on social media. In her final post, she expressed gratitude for her followers and thanked them for their support.