Sarah said: “I’ve tried many different diets over the years, but when I heard about Gianluca Mech’s work, I decided to visit the University of Padua, one of Europe’s oldest seats of learning, where the research for the diet is carried out.
“I was impressed by what I heard, and the scientific evidence there is to show the benefits of a ketogenic diet and variants of it.”
The Duchess said she followed this diet for 18 months and it dramatically improved her weight and health.
Gianluca revealed Sarah likes savoury food more than sweet, so she particularly enjoyed bread, pasta and pizza.
READ MORE: Sarah Ferguson’s support for Andrew ‘won’t change thing’