Food package claims like “a good source of fiber,” “low-sodium,” or “no high-fructose corn syrup” don’t necessarily mean that the food inside is healthy. Such claims may hide a food’s unhealthy qualities. For example, a boxed macaroni and cheese may tout “no artificial flavors, preservatives or dyes"—and contain a high amount of sodium. Harvard T.H. Chan School of Public Health's Walter Willett advises shoppers to check nutrition labels for sodium, sugar, whole grains, type of fat, and calories.
