GP and TV doctor Rangan Chatterjee on how a personal nightmare with his son's health changed his approach to medicine

“We went on holiday one Christmas to Chamonix. I can still remember it like it was yesterday. I was in the kitchen when my wife called out to me. She had my son in her arms and said, ‘Rangan, he’s stopped moving’. I froze.

“He’d been very phlegmy that day, so I turned him on his front and tried thumping him on his back to clear his airway, as I thought he might be choking, but nothing was happening,” Chatterjee, 43, recalls.

They made the hazardous car journey in the snow to hospital. “When we got there, the medical staff were clearly really worried and put lines in his neck. Essentially, he’d had a convulsion because of low levels of calcium in his blood, which we found out later was secondary to low levels of vitamin D.

"It was pivotal for me, because not only was that the scariest thing to happen to any parent – we didn’t know whether he would make it that night, we thought we might lose him [he was in hospital for five nights] – but ultimately he nearly died from a preventable vitamin deficiency.

“That was hard for me to stomach. I felt a lot of guilt around that because I thought, I’ve been to one of the most prestigious medical schools in Edinburgh, I’ve got an immunology degree, specialist exams, GP exams, with all those so-called ticks, but I wasn’t able to protect my own son from getting really sick from a preventable vitamin deficiency. We were completely in shock.”

From that point, Chatterjee set out to find out things he hadn’t learned at medical school. “Modern medicine saved my son’s life, but they didn’t teach us about the impact of having a vitamin deficiency. I became obsessed, I would study nutrition, gut health and microbiology,” he explains.

This all happened a decade ago and inspired Chatterjee’s more progressive approach, tackling the root causes of both mental and physical health problems, rather than just treating them with medication. His bestselling books – including Feel Better In 5 and The 4 Pillar Plan – are all built around this focus, including looking at lifestyle as a key part of the picture.

Now his latest title, Feel Great Lose Weight, examines how people can adopt long-term habits for lasting weight loss. It explores the roots of why people gain weight and how using a toolbox of techniques and lifestyle changes – without resorting to crash diets or endless gruelling workouts – can help build a better, healthier relationship with food and lead to sustainable results.

The GP’s career path has at times put him in the media spotlight, first as the host of BBC One’s Doctor In The House. His hit podcast, Feel Better, Live More, attracts more than 1.6 million listeners a month and has welcomed guests including Hollywood star Matthew McConaughey to share thoughts on their physical and mental wellbeing.

His passion to help others with a more whole approach to health and medicine remains at the core of his work: “It never came from the thought that I wanted to be on telly, that I want to be known. I’m not bothered about that. I want to change people’s lives.”

He’s remained busy during the pandemic, writing his latest book, still works as a GP one day a week and is about to add to his workload with a new weekly wellbeing show on BBC Radio 2, featuring inspirational guests and a positive musical soundtrack.

As for the future, Chatterjee reflects: “I feel the impact of 2020 is going to bite next year. We’ve been kept apart for so long, I worry about the mental health consequences.”

Feel Great Lose Weight is available now. Chatterjee’s new BBC Radio 2 show on starts on January 24 at 10pm.

Support The Yorkshire Post and become a subscriber today. Your subscription will help us to continue to bring quality news to the people of Yorkshire. In return, you'll see fewer ads on site, get free access to our app and receive exclusive members-only offers. Click here to subscribe.