It may make the stomach turn, but scientists in Norway suggest that taking a spoonful of cod liver oil each day could stave off depression.
In a study of almost 22,000 people aged over 40, those who regularly took the oil were less likely to suffer depression than those who did not.
The study in the Journal of Affective Disorders also suggested the longer one took it, the less depressed one became.
The oil is rich in Omega-3 fatty acids which are linked to various benefits.
Children's brains are said to be boosted by Omega-3s, which have also been claimed to reduce the risk of stroke, heart attack and cancer, although some studies have cast doubt on this.
Source - BBC