Vitamin D Deficiency: Could You Be at Risk Without Realising It?
Why a growing concern about vitamin D levels in the UK deserves our attention — particularly during the winter months.
A BBC News report published today (30 October 2026) has highlighted a worrying issue: vitamin D deficiency remains a significant health concern in Britain, including among young, otherwise healthy people.
According to figures highlighted in the report, nearly one in four 11–18-year-olds were classified as vitamin D deficient in the latest National Diet and Nutrition Survey.
But could you be deficient without even knowing it?
Why does vitamin D matter?
Vitamin D helps the body absorb calcium and phosphorus, two minerals essential for healthy bones.
Severe or prolonged deficiency can lead to osteomalacia in adults, where bones become softer and weaker, and rickets in children, which affects developing bones.
Low vitamin D levels can also contribute to muscle weakness and bone discomfort.
As chiropractors and osteopaths, we recognise that good musculoskeletal health involves more than simply treating painful joints or muscles. Nutrition, physical activity and general health all play important roles.
The hidden problem: you might feel perfectly healthy
One particularly interesting aspect of the BBC report is that vitamin D deficiency can affect young, active individuals who might otherwise consider themselves healthy.
Symptoms can be subtle, including fatigue, muscle weakness or generalised bone pain. Some people experience no obvious symptoms at all.
Importantly, these symptoms are not specific to vitamin D deficiency and can have many other explanations.
This is why awareness matters, particularly for people with recognised risk factors.
Why winter makes things worse
Most of our vitamin D comes from sunlight rather than food.
Vitamin D – Bottled Sunshine
When UVB rays reach our skin, they trigger vitamin D production. However, between October and March, sunlight in the UK is generally insufficient for meaningful vitamin D synthesis.
Even spending time outdoors regularly may not provide enough during these months.
Although foods such as oily fish, egg yolks and fortified cereals contain vitamin D, obtaining sufficient amounts through diet alone can be challenging.
Why people with darker skin face greater risks
This is an especially important consideration.
People with darker skin naturally have more melanin, which reduces the efficiency of vitamin D production from sunlight.
Consequently, people of African, African-Caribbean and South Asian heritage living in Britain may be at greater risk of deficiency throughout the year.
Other higher-risk groups include people who spend limited time outdoors, cover most of their skin, or rarely receive direct sunlight.
Recognising these differences is important when considering whether supplementation might be beneficial.
Should everyone take vitamin D supplements?
Current NHS guidance recommends that everyone considers taking a daily supplement containing 10 micrograms (400 IU) of vitamin D during autumn and winter.
People with darker skin, and those with very limited sunlight exposure, should consider supplementation throughout the year.
For most adults, this is a straightforward and inexpensive way to help maintain adequate vitamin D intake.
However, taking excessively high doses without medical advice is not recommended. Too much vitamin D can cause harmful calcium accumulation in the body.
If deficiency is suspected, particularly where symptoms are present, your GP can advise whether blood testing or treatment is appropriate.
Looking after your musculoskeletal health
At Reflex Spinal Health, we encourage patients to consider the bigger picture when looking after their bodies.
Regular exercise, appropriate strength training, balanced nutrition and adequate vitamin D intake all contribute to maintaining healthy bones and muscles.
Vitamin D supplementation cannot replace appropriate treatment for back pain, neck pain or other musculoskeletal conditions, but preventing deficiency is an important part of supporting general health.
As winter approaches, perhaps it’s time to ask yourself: am I getting enough vitamin D?
Read the original BBC News report on vitamin D deficiency.
This article provides general health information and should not replace personalised advice from your GP or another qualified healthcare professional.
