Conversation so far:
Where was Kurt Gödel born?
Brunn, Austria-Hungary.
When was he born?
April 28, 1906.
What was his home life like?
ethnic German family.
Where did he go to school?
Godel attended the Evangelische Volksschule, a Lutheran school in Brunn.
What were his interests?
Although Kurt had first excelled in languages, he later became more interested in history and mathematics.
Are there any other interesting aspects about this article?
Kurt suffered from rheumatic fever; he completely recovered, but for the rest of his life he remained convinced that his heart had suffered permanent damage.

Question: What made him think his heart had permanent damage?
Self-contained rewrite: What made Kurt Gödel think about his heart had permanent damage?