Research has confirmed the link between depression and a lack of vitamin D, and it is vital to eat foods that contain it, finds Margaret Jennings

A UCC study of more than 1,000 newborns found almost half (46%) were deficient in vitamin D, rising to 62% in wintertime.

A study that found one in six mums-to-be are deficient in the sunshine vitamin could bolster the case for introducing pregnancy-specific guidelines for vitamin D.