What things do all popular diets agree on?

[Ferret_Herder]

An article compared 14 popular diet plans (summarized at Lifehacker) and came up with this list:

Safe:

[ul]
[li]Fruits[/li][li] Vegetables[/li][li] Lean meats (except vegan/vegetarian)[/li][li] “Healthy” plant oils: olive, coconut and others high in monounsaturated fats[/li][li] Whole grains[/li][/ul]

Avoid:
[ul]
[li]White refined sugar (table sugar)[/li][li] High fructose corn syrup[/li][li] Processed grains (white flour, white rice, etc)[/li][li] Processed grain products (white breads, pastas, etc)[/li][li] Processed food (cheese spreads from a can, snack cakes, etc)[/li][li] Processed meats (pre-packaged lunch meats, pepperoni and the like)[/li][li] Saturated fats[/li][li] Trans Fats[/li][li] Additional sodium (table salt)[/li][/ul]