Even though they’re all found in the same aisle at the grocery store, there’s one key difference between tree nuts (which include almonds, walnuts, cashews, and pistachios, to name a few) and peanuts.

Peanuts, almonds, pistachios, and other whole nuts offer protein comparable to that of peanut butter, plus fiber, healthy fats, and other nutrients.

How does that old Almond Joy commercial go? Sometimes you feel like a nut, sometimes you don't. Yes, that's the one. But wait, what is a tree nut? Sometimes it's not always clear what distinguishes an ...