Vitamin D is commonly found in fish, eggs, fortified milk, cod liver oil and in supplements.

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He is also meticulous about their diet and makes sure they take their vitamins and cod liver oil.

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They are taken by professionals, executives and managers like cod liver oil, necessary, distasteful and of questionable value.

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The balance of protein and carbohydrate and fat -- the cod liver oil.

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It has long been known that vitamin D prevents rickets and children were once given food supplements like cod liver oil.

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Small amounts of vitamin D can be consumed through food, such as fish, cod liver oil, and fortified milk and juice.

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After completing the tasks, the bears lap up the cod liver oil.

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When Dr Hugh Sinclair persuaded the British government in 1942 to supplement children's diets with orange juice and cod liver oil, he speculated that among other ills, poor diets could lead to anti-social behaviour.

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He may not have then predicted the way in which cod liver oil - rich in an essential fatty acid called omega-3 - would be seized from the shelves of health shops and supermarkets by a later generation of parents convinced it would help their child excel at school.

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Raw whale-meat bacon (a.k.a. blubber) was white, hard to swallow and tasted like pork fat injected with cod-liver oil.

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That's because they store fat in their livers (as in cod-liver oil).

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