The Most Common Nutrient Deficiencies in the UK

And how to detect them early

It is easy to assume that nutrient deficiency is rare in modern life. In reality, some deficiencies remain very common in the UK — particularly where lifestyle, diet, health conditions, absorption issues or limited sun exposure affect the body's ability to maintain healthy levels.

Vitamin D is one of the clearest examples. Because sunlight is a major source of vitamin D, the NHS advises that everyone should consider a daily supplement during autumn and winter, and some groups are advised to consider supplementation all year round. Low vitamin D can contribute to bone pain, muscle weakness and tiredness.

Iron deficiency is also common and can lead to tiredness, breathlessness and palpitations. Vitamin B12 and folate deficiency can affect red blood cell production and neurological function, with symptoms that may include extreme tiredness, low energy, pins and needles, poor concentration and memory changes.

Biomarkers that may help provide answers

Useful markers when assessing nutrient status often include:

• Vitamin D
• Ferritin and iron studies
• Vitamin B12
• Folate

The Cocoon perspective

Understanding your nutrient status can be a much more grounded first step than reaching straight for supplements. Testing allows you to see what is actually low, what is already adequate, and where support may genuinely be needed.

Cocoon's health panels include key nutrient markers to help you understand whether low energy, reduced resilience or general "not feeling quite right" could be linked to an underlying deficiency.