Shutterstock Weight Watchers introduced its new 'Freestyle' program on Monday. The program uses the company's SmartPoints system, where users track the points in the foods they eat, but adds new flexibility with an expanded list of foods with zero points. The zero-point foods list includes 200 items, including eggs, salmon, beans, and peas. Weight Watchers CSO Gary Foster told Business Insider that the new system reflects the latest science on healthy eating — and studies suggest he's right. Dieting can feel like torture in a country that came up with the Crunchwrap Supreme. In comparison to whizzing through a drive-through for an inexpensive meal, many dieters have to measure and track every item they eat or drink. And a lot of healthy food isn't cheap. With that in mind, Weight Watchers — one of the oldest dieting companies in the world — is introducing a new program that allows users to spice up their daily meal plans with 200 foods that they can eat as much as they want. The new list of so-called "zero-point foods" has some surprising additions, from whole eggs and salmon to beans and even lobster. It sounds almost too good to be true. As far as the program is concerned, that smoked salmon omelette you ate for brunch wouldn't count. Yet the new framework reflects several recent changes in how scientists and dietitians think about healthy food. "These foods get picked for a reason," Gary Foster, Weight Watchers' chief scientific officer and an adjunct professor at University of Pennsylvania's medical school, told Business Insider. Weight Watchers' point system gives foods a numerical value  The crux of the current Weight Watchers program, popularized by talk show host Oprah Winfrey, is a system called SmartPoints. Servings of food are assigned points based on four criteria: calories, saturated fat, sugar, and protein. Every Weight Watchers member gets assigned a daily and weekly point goal based on their height, weight, age, and gender. The points totals are designed to help them lose 1-2 pounds per week. That figure is widely considered a safe pace for successful weight loss. Flickr/With Wind Previous iterations of the SmartPoints system