I don’t know about Christy but I’m fairly sure that Giada eats desserts and other things not considered healthy in addition to the things that are considered healthy by most. Being a professional chef and baker, I am sure she eats homemade food mostly, which by the way is what Michael Pollan says is the number one thing you can do to live a healthy lifestyle (or something to that effect).
Some people are born genetically lucky in that they can eat whatever they want (be it tons of veggies, greens included, or lots of sugar and starch and fat) and not gain or get sick,….. I believe that that trait can lead to a more positive and serene attitude and because they are naturally slim and healthy they can maybe attract more and accomplish more than those in a metabolically challenged state. Not fair but then who said life was fair, right?
Anyway, the food you eat and how much is just one part of the metabolic puzzle.