Detox isn't just the domain of models and celebrities anymore. As juice bars and colon cleansing clinics multiply in our cities, Tim Caulfield is fact checking the fresh start.

The academic and author (Is Gwyneth Paltrow Wrong About Everything?) joins guest host Rachel Giese to explore our growing obsession with cleanses — particularly at the dawn of a new year — and how we might understand them as metaphors for new beginnings.

Also: are we really "detoxifying" our bodies, or just re-branding the fad diet? Are liquefied fruits and veggies really better than solids? And why do so many people suddenly care about gut health?

q: Why is the idea of the cleanse so appealing? Health motives aside, do you think detoxing has emotional or spiritual value?