Take it from a 84 year old me, it is HOW much you eat, not WHAT you eat. I still weigh same as at age 25,
5’-8” and 150 lbs. I eat ice cream almost every day.
If you also have leg hairs that attract the little black kids at a pool where you eat corn pops for breakfast, then you can someday be president—you already have the daily ice cream part going.