Jennifer Lyon, a contestant on Survivor: Palau in 2005, died at her home in Oregon Tuesday night after loosing a battle with breast cancer.

According to People magazine, she was 37 and was diagnosed with stage three breast cancer that same year after placing fourth in the reality series.

Jennifer Lyon used her celebrity to advocate for breast cancer awareness and fundraising.

In the summer of 2004, I felt something in my right breast that didn't feel normal, Lyon told People in October 2005.

I thought it was probably scar tissue related to my breast implants. So I let it go — for a long time.

Lyon underwent a double mastectomy, followed by chemotherapy treatment.

Medicine Breast cancer