Is What Not to Eat coming back?

What Not to Eat is currently airing on Channel 4; the next episode airs in 2026-01-27.

The show is a food documentary series that premiered in January 2026. It was hosted by Professor Tim Spector, who explored the impact of ultra-processed foods on health. Throughout the series, he examined common food items and revealed how some so-called healthy options can be surprisingly harmful, offering viewers nutritious alternatives and practical advice on shopping, cooking, and eating better to improve the nation's health.

The series starred Tim Spector as Professor Tim Spector and Kandi Ejiofor as Dr Kandi Ejiofor. It had a total of four episodes in its first season and a runtime of 60 minutes per episode.