Vitamin D

Despite Australia's climate, vitamin D deficiency is common, particularly in winter in southern states, in people who cover for cultural or sun-safety reasons, and in those with darker skin. Deficiency is worth correcting for general and pregnancy health. Evidence that supplementing improves fertility outcomes in people with normal levels is limited.

Also known as: 25-hydroxyvitamin D, vitamin D deficiency

Last reviewed: 10 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.