Rock Doc

Today’s snack food aisle in the grocery store contains a lot more products than when I was a kid. Back then, we mainly had potato chips and saltines, but not much more. Now there’s a multitude of choices designed to help you satisfy your cravings for something crunchy.

It’s fair to say most of us don’t spend a lot of our time cooking from scratch. “Processed foods” – everything from snacks to boxed dinners – make up a great deal of what most Americans eat. Indeed, the majority of what most of us eat is processed to one degree or another.

Some highly processed foods are not so healthy, especial...