I'm going to tell my dad to eat healthier or refuse to let him eat candy
Why do you want your dad to stop eating candy?
It's horrible and it makes me feel ill
Eating is all about balance. Some candy here and there won't harm anything.
No but it's bad for you though. By not buying it he can't eat it.
Your father is an adult and makes his own decisions. He can just go out and buy it himself, instead express your concerns and ask that he cuts down.