Whilst we’re all at risk of having low vitamin D levels during the darker months in the UK, some people can be at risk all year round.
You should take a 10 microgram vitamin D supplement all year round if you spend a lot of time indoors (for example, if you’re frail or housebound), if you’re in an institution like a care home, or if you usually wear clothes that cover up most of your skin when you’re outdoors.
This also applies if you have dark skin - for example if you have an African, African-Caribbean or South Asian background - as your skin might not make enough vitamin D from sunlight alone.