Gabon's second runner-up Jessica "Sugar" Kiper took to Facebook to say her thoughts were with Kay's family.
According to Kay's obituary, he was "known for his hard work, dedication, attention to detail and strong work ethic.
"In his free time, he enjoyed running, skiing, listening to music, and attending Crossway Christian Church. Dan had a smile that could light up a room. His desire to be challenged and his quest for adventure lead to his participation on the reality show, Survivor."
During the show, Kay described himself as an "athletic kid growing up."
His obituary describes his hobbies as "running, skiing, listening to music, and attending Crossway Christian Church."
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The devout Christian - who had a 'Carpe Diem' tattoo on his arm - was also a father of two young children, Reese Elizabeth and Jackson "Jax" Russell-Reid.