Conversation so far:
what did Lou Groza do later in life?
After Lou Groza retired, he entertained an offer to play for the San Francisco 49ers.
did Lou Groza do anything else?
Lou Groza was hobbled in the late 1990s by back and hip surgeries and Parkinson's disease.
when did Lou Groza die?
2000

Question: how did he die?
Self-contained rewrite: how did Lou Groza die?