For people who have read Joyce's Ulysses, do you think Leopold Bloom seems rather old for a 38-yr old man?

Biologically, Bloom is not old, but he seems to be portrayed as such. Or, for whatever reason, readers of Ulysses come away with the impression that Bloom is a rather older middle-aged man. However, is this impression reliable? The only hard evidence in the book concerning Bloom's condition points toward a very fit, healthly man, with plenty of ual vigour. Joyce wanted a 67-year old actor to play Bloom in a film-version which never came off. This seems to indicate that the author thought Bloom was older rather than younger, but, within the text itself, there seems to be nothing which would support the idea that the main character is actually really and truly getting old. A recent film of the book casted a 57-yr old in the part (Stephen Rea). What is going on? I know 38-yrs old means something different after the space of a century, but can we really say that Bloom is old?