As we head into the cooler, darker months, the NHS recommends adults and children over the age of four “consider taking a daily vitamin D supplement”.

Most of us could benefit from supplementation from next month until spring, the health service added, as “between October and early March we do not make enough vitamin D from sunlight”.

In fact, for people who don’t go outside often, whose skin is mostly covered when they do leave the house, those in care homes, or those with darker skin tones, it might be worth taking the supplement year-round rather than just in winter.

But how much should you take?

After all, taking too much of the vitamin over a long period of time can lead to hypercalcaemia .

So, we thought we’d share the NHS recommendations by age (though of course, you should

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