This week I sat down with Dr John Loy, one of the busiest weight-loss surgeons working between Ireland and the UK. He told me the best training he ever had for medicine wasn't in a lecture hall. It was behind the bar of his family's pub in County Down, learning to read people before they'd said a word. Years later, a chance meeting in New York changed how he thinks about the job entirely.

Obesity as a disease, not a decision

The conversation kept coming back to one idea: obesity is a disease, not a choice, and the people who live with it deserve to be treated that way. John talks about the person sitting across the desk from him with real respect, not as a set of statistics or a before-and-after photo, but as someone carrying something most people never see.

Why the first appointment is the hardest part

More than half of John's patients cry at their first appointment. For a lot of them, it's the first time they've said any of it out loud, the years of struggling, the shame, the attempts that didn't work. Just picking up the phone to book that appointment takes something. John's whole approach seems to start from understanding that before anything clinical happens.

How the surgery actually works

John walked me through the three main options, the gastric balloon, the sleeve and the bypass, and gave one of the clearest explanations I've heard of what each one actually does in the body. His description of the bypass stuck with me: he compares it to getting a free GLP-1 injection every day for life, because of how it changes the gut hormones involved in appetite and fullness. Which raises an interesting question, given how much attention GLP-1 injections like Ozempic and Wegovy have had lately: you'd expect demand for surgery to be falling. John says it's actually climbing. Why, he explains properly in the episode.

The stories that stay with him

Surgeons collect stories the way anyone does after years of the same work, and John has a few that clearly haven't left him. One patient thanked him in a way he says he'll never forget. Another had reached the point of believing he'd never travel again and found his way back to it. I won't tell you how either story ends here. They're worth hearing the way John tells them.

This was a warm, genuinely eye-opening conversation, and one I think is worth your time whether or not weight has ever been something you've struggled with yourself. Have a listen wherever you get your podcasts.