Nuts: high in omega 6's (which increase inflammation), are full of carbs, and highly concentrated calories.
Dairy: is insulinogenic, if it's not grassfed/organic it's full of pesticides and hormones, again high sugar/carb content and concentrated calories (but Fage is SO good!)
Fruit is fructose in a convenient package.
I've given up all three and don't miss them much at all... I miss dairy for the convenience, but I'm finding some raw/grassfed/organic cheese (for when I finish my whole 30) and lots of coconut products to use in cooking, etc.
I haven't noticed any weight loss, but I've noticed my gut is happier without dairy.