If the thought of a salad makes you glum, tucking into a burger is best for cheering you up, say scientists. Beef was the only food linked to a lower risk of depression in a study on 440,000 Brits.If the thought of a salad makes you glum, tucking into a burger is best for cheering you up, say scientists. Beef was the only food linked to a lower risk of depression in a study on 440,000 Brits.Read MoreHealth News | Mail Online