By the way, I am unaware of any evidence that fruit should be eaten in moderation.
There have been studies pointing out fruits even help decrease symptoms of diabetes.
http://nutritionj.biomedcentral.com/articles/10.1186/1475-28...
The conclusion of the randomized study above was that the intake of fruit should not be restricted, despite the fear that sugar makes you die.
http://www.cabdirect.org/abstracts/19711408038.html;jsession...
This one has a mainly fruit diet for its participants. 2500kcal of fruits per day. No one had any serious side effects.
These "not man-made", paleo, keto, low-carb and other diets are all fads. All of them. They promote an unhealthy relationship with food. Not unhealthy as in philosophy but unhealthy scientifically (orthorexia + the humongous evidence that food is not poison).
It's a much higher chance that the American population is extremely orthorexic and that they avoid fruits and veggies thinking that pesticides and sugar will kill them. This unhealthy relationship results in overeating highly caloric foods like meat, dairy, eggs, drinks etc.
I highly recommend
In Defense of Food: An Eater's Manifesto
http://www.amazon.com/Defence-Food-Nutrition-Pleasures-Eatin...
The Gluten Lie
http://www.amazon.com/Gluten-Lie-Other-Myths-About/dp/194139...
for anyone thinking they have an unhealthy relationship with food that could cause them to have an unhealthy diet.
There is of course no need to bath them in fat, 1 egg has ~80-90 calories, they are mostly water.
They are certainly higher in calories than vegetables, but if you consider the typical diet, they are not towards the high end of calorie density.
And exercise, while useful for building muscle mass and increasing your capacity for physical exertion, isn't particularly useful for covering up a poor diet - it would take more than two hours of jogging to burn off the calories in a small Big Mac meal from McDonalds, for example. If you want to lose weight, it's far, far more efficient to simply eat less.