https://www.valterlongo.com/wp-content/uploads/2018/02/the-telegraph-logo.jpg310384wpadminhttps://valterlongo.com/wp-content/uploads/2019/09/prof-valter-longo.pngwpadmin2015-06-18 14:47:282018-02-18 23:34:39Five day 'fasting' diet slows down ageing and may add years to life