You can still die, just not from hunger/thirst.
And you have to hide it, or else governments around the world are gonna lock you to a blacksite and experiment on you. (I mean, you are essentially a weird mutant / supernatual being, governments be paranoid)
Tbh I managed to almost forget to eat pretty much all of last week so my habits probably wouldn’t change much, I’m guessing I can still eat just for the sake of eating right? So I could just eat out every now and again and no one would notice