Dietary vitamin D is available in foods such as oily fish, cod liver oil, red meat, fortified cereals, fortified spreads and egg yolks.

In the UK, milk is not fortified with vitamin D, so dairy products contain only small amounts of vitamin D.

The NHS says: “If you choose to take vitamin D supplements, 10 micrograms a day will be enough for most people.”

The health body adds that you should not take more than 100 micrograms of vitamin D a day as it could be harmful.

Source: | This article originally belongs to Express.co.uk