Unfortunately, the arithmetic is not good. We like to think a Ceasar salad, for example, is healthy because lettuce. If you actually calculate all the calories from the toppings, however, the lettuce ends up being like 50 calories out of 470. The rest is refined fat with sugar and salt and flavoring. Yummy but hard on health.
Unfortunately, we're wired for potency and refined foods give us potency much higher than nature gives by combining sugar, fat and salt. Dressings are notorious for it.
I buy the dressings from Forks Over Knives and take a bottle when we go out to dinner at Sweet Tomatoes: