They do feature in ads for erectile dysfunction, constipation, and so on, so I suppose they are represented on the 'grim bodily functions' front; but I do think that a lot of adverts are still sexist, particularly when they feature older women.
One of my 'favourites' is the Sun Life one with the simpering June deferring to the chap who grows parsnips and considering getting an over 50s plan on his recommendation.
They are not as bad as they were when we used to get two women discussing the advantages of floor cleaner over coffee, and a male voiceover explaining why the advertised brand was best. They were called 2CK in the trade - 'Two Cs in a Kitchen'. I'll leave it to your imagination as to what the C stood for ?. I think things have moved on since then, but there is still a way to go.