'Survivor: Palau' contestant Jennifer Lyon passes away

Jennifer Lyon, fourth-place finisher on "Survivor: Palau," has succumbed to breast cancer at the age of 37.

Lyon was diagnosed with stage three breast cancer in 2005 and shortly thereafter had a double mastectomy and started undergoing chemotherapy. Austin Carty, a contestant on "Survivor: Panama," briefly dated Lyon three years ago and told US Magazine Wednesday (Jan. 20) that "Jen was a genuinely selfless, sweet-natured person. She always had a smile. She cared about every person. This has really rocked the "Survivor" community."

"Survivor: Palau" was the season Tom Westman took home the prize. Jenn was Tom's ally going into the Final Four and when the vote was split between Jenn and Ian, there was a fire-building challenge to decide the winner. Ian pulled it out and Jenn finished in 4th place.

Jenn's website is largely dedicated to various charitable foundations, as she has been advocating for breast cancer research since her diagnosis in 2005.

RIP, Jenn. We enjoyed your season of "Survivor" very much.

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Photo credit: CBS