“The results were clear: of all groups, the high-protein breakfast group recorded the highest dopamine levels and lowest pre-lunch food cravings.”
As well as eating more, John clearly follows a healthy eating plan and will upload snaps of the healthy creations he cooks to Instagram.
While on Good Morning Britain, he explained exercise also helped him slim down.
The Masterchef judge added: “I feel brilliant, actually. It’s about three stone and I feel great for it. I cycle everywhere, I eat different.”