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A UK government diet and nutrition survey cited by Glamour UK found vitamin D deficiency in nearly one in five adults aged 19 to 64, rising to nearly one in three in winter. Fatigue, bone pain, muscle weakness, frequent illness and low mood are discussed as possible signs, but none confirms a deficiency; a healthcare professional can advise on assessment and supplements.
A Glamour UK report published in 2026 lists fatigue, bone pain, muscle weakness, frequent illness and low mood as possible signs of low vitamin D, while citing a government nutrition survey that found deficiency in nearly one in five UK adults aged 19 to 64, rising to nearly one in three during winter. The symptoms can have other causes, so they cannot establish a deficiency on their own.
The report draws on comments from nutritionists, dietitians and general practitioners, along with studies on vitamin D and health. It describes vitamin D as a fat-soluble vitamin that the body produces in response to UVB sunlight and obtains from some foods and supplements. The NHS says vitamin D helps regulate calcium and phosphate, which support healthy bones, teeth and muscles.
The five signs highlighted are frequent illness, fatigue, bone pain, muscle weakness and depression or low mood. The report says vitamin D has a role in immune function and that low levels have been associated with fatigue and muscle problems in research. It also describes studies linking deficiency with bone pain and low mood. These findings indicate possible associations, not proof that vitamin D deficiency caused an individual’s symptoms.
The report names limited sunlight and an unbalanced diet as possible contributors. Vitamin D production can be lower when people spend little time outdoors, and the report notes that UK winter sunlight may not support production. Fatty fish and eggs are among the foods it identifies as sources. It discusses supplements as another way to raise intake, but readers should follow official guidance and seek professional advice on an appropriate dose.
Recognising Symptoms Without Self-Diagnosis
The survey figures suggest that low vitamin D is a common public-health concern in the UK, with the reported share higher in winter. That makes awareness of possible signs useful, particularly for people with limited sunlight exposure. However, the symptoms listed are not specific to vitamin D deficiency: fatigue, low mood and muscle aches can arise for many reasons.
That distinction matters because treating a suspected deficiency without checking may delay attention to another cause, while taking unnecessary or excessive supplements can be harmful. The report offers readers a prompt to discuss persistent symptoms or risk factors with a clinician, rather than a checklist that can diagnose the condition.
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Why Vitamin D Levels Can Fall
Vitamin D supports the body’s handling of calcium and phosphate, nutrients involved in maintaining bones and teeth. The body can make vitamin D when skin is exposed to UVB rays; dietary sources include certain foods, while supplements can provide an additional source. The amount made through sunlight varies with factors such as season and time spent outdoors.
The Glamour UK report says government survey data put deficiency at nearly one in five adults aged 19 to 64, increasing to nearly one in three in winter. The supplied report does not provide the survey’s exact dates, deficiency threshold or full methodology, so those figures should be read in the context of the survey rather than as a current individual risk estimate.
Several experts quoted in the report discuss limited sun exposure and low dietary intake as contributors. It also raises the possibility that people with darker skin may be at greater risk in the UK, but the article’s comments are not a substitute for personalised clinical guidance. Individual risk depends on more than one factor.
“Vitamin D helps regulate the amount of calcium and phosphate in the body.”
— The NHS, as cited by Glamour UK
Symptoms Do Not Confirm Deficiency
The five signs are possible indicators, not a diagnostic test. The report does not say how often each symptom occurs among people with low vitamin D, or how reliably any one symptom identifies it. It also cites research on fatigue and mood while acknowledging that further research is needed to establish the relationship between vitamin D and depression.
The source material does not give the survey’s field dates, sample details or threshold used to define deficiency. It also does not provide a single supplement dose for readers. The appropriate assessment and intake can depend on a person’s circumstances, so a clinician or pharmacist is a better source for individual advice than symptoms alone.
When to Seek Individual Advice
People with persistent symptoms or concerns about low vitamin D can speak with a healthcare professional, who can consider their history and whether testing or supplementation is appropriate. Readers should not treat the report’s symptom list as proof of a deficiency or use it to change prescribed care.
For prevention, the report points to dietary sources such as fatty fish and eggs and discusses supplements, particularly when sunlight exposure is limited. Follow local public-health guidance on supplementation, and ask a clinician or pharmacist about dose and suitability, especially during pregnancy, with existing health conditions, or when taking other medicines. The next useful development would be fuller publication of the survey methods and current official guidance; neither is detailed in the supplied report.
Key Questions
What are the five possible signs of low vitamin D?
The report lists frequent illness, fatigue, bone pain, muscle weakness and low mood or depression. These symptoms can have other causes and do not confirm a deficiency.
How common was vitamin D deficiency in the cited UK survey?
The figures cited by Glamour UK say nearly one in five adults aged 19 to 64 had a deficiency, rising to nearly one in three during winter. The supplied report does not include the survey dates or full methodology.
Can symptoms alone tell me whether I have a deficiency?
No. The signs in the report are non-specific. A healthcare professional can advise whether an assessment or test is appropriate, especially if symptoms persist.
What can contribute to low vitamin D?
The report identifies limited sunlight exposure and low dietary intake as possible contributors. Season, time outdoors and personal circumstances can affect vitamin D levels.
Should I start taking a vitamin D supplement?
The report discusses supplements but does not give a personalised dose. Follow official local guidance and ask a clinician or pharmacist about what is suitable for you, particularly if pregnant, managing a health condition or taking medication.
Source: rss
