I'm more concerned about his wardrobe from the context of personal hygiene. Like he hardly ever seems to wear different clothes unless he reincarnates(?)
With the 3rd & 4th Doctor, at least they occasionally changed their jackets. I just hope he's got 2 or 3 sets of the same garb for the rest of his attire (for his companion's sake).
If he has, we never get to see if he's got a clothes rack or dryer on board the Tardis to dry out his washing. But thinking about it further, he must have several of the same thing because we all know he has a lot of washing.. -whenever he boards the Tardis it doesn't take long to see him start it up, & away it goes, up and down, repeating those endless washing cycles!