Vitamin Deficiency Quiz: Which Vitamins Are You Missing? Free Test
Identify vitamin and mineral gaps from your symptoms in 2 minutes
NewAbout Vitamin Deficiency Quiz
Vitamin deficiencies are far more prevalent than most people realise. A 2022 UK Biobank analysis found that 1 in 5 UK adults is vitamin D deficient, 1 in 10 is B12 insufficient, and magnesium inadequacy affects over 68% of Western adults. The problem is that many deficiency symptoms — fatigue, mood changes, hair loss, poor concentration, frequent illness — are non-specific and overlap with dozens of other conditions. The free Vitamin Deficiency Quiz analyses 18 symptom and lifestyle questions against the known symptom profiles of the six most clinically significant micronutrient deficiencies, generating a personalised risk profile with specific food sources and evidence-based supplement guidance.
How to Use Vitamin Deficiency Quiz
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1Answer 18 Questions
Questions cover energy levels, bone and muscle symptoms, mood, immune function, skin and hair health, tingling/numbness, sun exposure, dietary habits, and digestive health.
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2Review Your Deficiency Risk Profile
Each of 6 nutrients (D, B12, Iron/B9, C, A, Magnesium) is scored based on how closely your symptom pattern matches its known deficiency presentation.
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3Read Why Each Deficiency Matters
Each flagged nutrient includes a plain-English explanation of its role, why deficiency is common, and which populations are most at risk.
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4Get Food and Supplement Recommendations
Top dietary sources and evidence-based supplement dosages are provided for every nutrient with a moderate or high risk score.
The 6 Deficiencies This Quiz Screens
Vitamin Deficiency Quiz is built for users who need results right now — without sign-up friction, credit systems, or paywalled features. Whether you're a professional, student, or curious individual, every feature is fully accessible, private, and unlimited.
Who Uses Vitamin Deficiency Quiz?
Vegans and vegetarians screen for B12, iron, and vitamin D gaps. People with digestive conditions identify absorption-related deficiencies. Office workers with minimal sun exposure screen for vitamin D. Anyone experiencing unexplained fatigue identifies which nutrients to test for.
People Also Search For
Common search queries this tool answers:
Frequently Asked Questions
What are the most common vitamin deficiencies?
The six most prevalent vitamin and mineral deficiencies in Western adults are: vitamin D (1 in 5 adults deficient), vitamin B12 (particularly in vegans/vegetarians), iron and folate (most common globally), magnesium (affects 68%+ of Western adults), vitamin C (especially in smokers and low-fruit diets), and vitamin A. This quiz screens for all six.
Which blood tests confirm vitamin deficiencies?
Request from your GP: serum 25-OH vitamin D (vitamin D), serum B12 and folate, full blood count with ferritin (iron), serum magnesium, and retinol if vitamin A is suspected. Most are available on NHS when you present specific symptoms — show your quiz results to support the request.
Is it safe to take vitamin supplements without a blood test?
Vitamin D (up to 4,000 IU/day), B12 (up to 1,000 mcg/day), vitamin C (up to 500mg/day), and magnesium glycinate (up to 400mg/day) are safe to supplement without testing for most adults. Iron should always be tested first — excess iron is harmful and requires a ferritin test to confirm deficiency before supplementing.
Can diet alone fix vitamin deficiencies?
For mild deficiencies, dietary improvement over 3-6 months is often sufficient. For clinical deficiencies confirmed by blood test, supplementation provides faster correction. B12 deficiency from pernicious anaemia or malabsorption often requires injections rather than oral supplements due to impaired gut absorption.
Is the vitamin deficiency quiz free?
Yes — completely free. Answer 18 symptom and lifestyle questions to identify which vitamins and minerals you may be deficient in, with personalised food sources and evidence-based supplement recommendations. No account or signup required.
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