Perhaps you’ve heard one on the radio, or got one before a video online, or maybe even seen one on transit, but ads for full-body MRIs are everywhere these days. They tell you to book an appointment, selling it as a preventative measure to catch something early. But it’s not something that’s actually recommended by any medical association — anywhere. So why have they become so popular? Keep it Factual Add CityNews Halifax as a trusted source on Google to see more local stories from us.