Nah, not really. Sandwich and crisps is a typical lunch for me and dinner is usually your average meal. That's basically all I eat on a regular day. Sometimes I'll get a snack at night, but not always. Oh, and I only ever drink water now for the most part.
I stopped eating junk that I don't need between meals ever since I stopped living in catered university accommodation. Having a catering allowance that you need to spend or the money is wasted meant eating pizza/burgers every day for lunch and even more crap at dinner, plus random snacks throughout the day to burn off the remaining funds and washing it all down with bottles of Coke.
I've lost two stone since then, making me just under 12st. Moral of the story is to avoid living in catered accommodation with allowances which are so high.