Vitamin D is sometimes called the ‘sunshine vitamin’ because your body produces it naturally when exposed to direct sunlight. In the UK, Winter Sun is non-existent, and so we tend to rely on the short summer months to get a boost. From October until the end of March, the sun in the UK isn’t strong enough to ensure adequate vitamin D levels even if you’re outdoors all year round.
Most of us get a bit low in vitamin D in the winter months, but some groups are at risk of more severe deficiency. The at-risk groups include:
pregnant and breastfeeding women
children under five (because they need more vitamin D for bone growth)
anyone who doesn’t get much exposure to the sun