I just got back from the Academy of Nutrition and Dietetics' Food & Nutrition Conference & Expo, the world's largest annual meeting of food and nutrition professionals. Registered dietitians (RDs), like myself, from all over the country (and even overseas) attend for up to four days of cutting-edge nutrition science research, educational presentations, lectures, debates, panel discussions, and culinary demonstrations.

My original plan was to write about my Expo discoveries, figuring I would find lots of new and exciting products to write about among the more than 350 food- and nutrition-related exhibitors. For many hours, I scoured the Expo floors looking for something new to jump out, until it hit me. I wasn't really going to find anything new, at least not new to me. As an RD who works with the media, I am always getting new research and information on products--long before those products hit supermarket shelves.

So, I decided instead to write about the food trends I observed. Here are four that I would like to see stick around, and a fifth that I'd like to see clarified:

1. Individual Serving Sizes

As the waistlines of Americans continue to expand, companies are manufacturing products that can be sold in individual serving sizes. Personally, I love this. My patients are taught to read nutrition facts labels, paying special attention to serving sizes. But the majority still have difficulty portioning out something that they are enjoying. However, a "100 calorie pack" of cookies with no nutritional benefit will never be as exciting to me as a "single serving" package of cheese, chocolate milk, or nuts.

2. Low Sodium

Ever since the government's 2010 Dietary Guidelines for Americans recommended 1,500 milligrams of sodium as the daily cap for African-Americans, adults older than 51, and for individuals with high blood pressure or type 2 diabetes, companies have been trying to lower the sodium in their products. I don't really see a downside to this effort, since most companies were probably using more than they needed to begin with.

3. Less Added Sugar

I'm happy to report that this trend is still going strong. However, as I always point out to my patients, there's a difference between added sugar and naturally occurring sugar, such as sugar from fruit or dairy products. That's why it's important to read the ingredients listed on the label to see where the sugar is coming from. I was pleasantly surprised to see that a new dried cranberry product is being introduced, with 50 percent less added sugar than its original variety. I am typically a much bigger fan of fresh versus dried fruits, because of the high sugar content, but now I may be able to go both ways.

4. Whole Grains

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5 Food Trends to Watch