Italian scientist Valter Longo says the key to longevity is to get the "poisonous P's" out of your diet. Longo talks about the “5 poisonous Ps”, which we must say goodbye to now to avoid the diseases of aging: bread, pasta, proteins of animal origin and with a high level of fat, potatoes and pizza.

And the P of pleasure? A San Antonio pizza. Who wants to live forever? Argentina's Viva O'Donnell and Esther Díaz have written to Longo asking if he has found the secret of longevity.