Conversation so far:
What health problems did Tierney have?
Tierney struggled for years with episodes of manic depression.
Besides depression, did Tierney have any other health problems?
She subsequently became a heavy smoker.
What health problems were the cause of her death?
CANNOTANSWER.
Besides smoking and depression, she she have any other health issues?
a suicide attempt.
how many times did she attempt suicide?
In late December 1957.
How did she attempt suicide?
Tierney, from her mother's apartment in Manhattan, stepped onto a ledge 14 stories above ground and remained for about 20 minutes in what was considered a suicide attempt.

Question: How old was she when she was diagnosed with her health problems?
Self-contained rewrite: How old was Gene Tierney when she was diagnosed with her health problems?