The marketing research group NPD predicts that certain types of "better for you" foods will increase over the next ten years. Unfortunately, it doesn't include animal products. Indeed, the low-calorie / lite foods are typically devoid of fat and high in carbs.
How anyone can think that a container of yoghurt with as much sugar as a candy bar counts as "health food," I'll never understand. Sure, people are bombarded with lots of conflicting advice about what to eat -- but no one ever told you that you needed more sugar.
NPD predicts that the organic category will grow the most, but that's not very reassuring either. Organic agave syrup will still mess up your liver, and local free-range corn will still rot your teeth.
The salty / savory snacks category is mostly empty carbs too -- this is chips, popcorn, etc., not duck liver mousse or dry sausage.
It's worth bearing in mind how long-term the low-carb effort will have to be if we want to see these trends reverse. Even massive popular awareness, as in 2004, won't ensure that it remains. If people view it as a fad, they'll grow bored or move on to whatever the next fashionable diet is.