Even though they are backed by research, antioxidants are one of those questionable things that everyone secretly suspects may be overrated.

These naturally-occurring compounds are found in many plant-based foods. Health experts claim they reduce free radicals, eliminate toxins and prevent disease, but are they really capable of such feats or is it yet another gimmicky sales pitch?

Here’s what you need to know about antioxidants and whether or not they're worth your time (and money).