Supermodel Gisele Bundchen’s personal chef has revealed the secret behind her and husband Tom Brady’s fit figures eating mostly vegetables.

Allen Campbell said the family swap white sugar and flour in favour of vegetables to keep themselves fit, reported Female First.

"Eighty percent of what they eat is vegetables and whole grains: brown rice, quinoa, millet, beans. The other 20 percent is lean meats: grass-fed organic steak, duck every now and then, and chicken. As for fish, I mostly cook wild salmon.

"[Tom] doesn’t eat nightshades, because they’re not anti-inflammatory. So no tomatoes, peppers, mushrooms, or eggplants. Tomatoes trickle in every now and then, but just maybe once a month. It’s very different than a traditional American diet, but if you just eat sugar and carbs – which a lot of people do – your body is so acidic, and that causes disease. Sugar is the death of people."