I am 31 and recently somebody knocked on my door asking "Is your mommy home?", trying to sign somebody up to a charity. When I said I am a tenant in this house he still seemed confused and said I had to be over 25 anyway to sign up (implying I looked younger).
The OP may have to look into what is causing his "ageing", and I guess shift work won't help indeed, as others have suggested, but for me personally living primally has made me look younger than I am (FWIW I only ate VLC for a month or so, I quite happily eat plenty of potatoes now). I still have some issues to sort out such as dark spots under my eyes after a bad night's sleep (I started moisturizing), but all in all this lifestyle has been a transformation for me.