The first lady kicked off the Italian leg of her trip to Europe, which began in London on Monday, with a cooking demonstration at the James Beard American Restaurant alongside a group of schoolchildren.
Tomorrow she will visit the world exhibition underway in the northern Italian city, which has a theme close to her heart: food.
Obama has long worked on "Let's Move!", her programme to get American children to eat more healthily and be more active.
"But more importantly, we'll be taking the time to learn from leaders here in Italy and all around the world to find out what's working for them."
Also Read
Obama told the paper that while the US is still grappling with a serious obesity problem -- one in three American children is overweight or obese -- and while the global prevalence of obesity has nearly doubled since 1980, there is "a lot of reason for hope".
US daycare centres are increasingly giving children fruit and vegetables instead of cookies and snacks, while thousands of restaurants are creating healthier kids' menus, she said.