New YouGov data finds low awareness of vitamin B12 deficiency. Many Brits chalk up fatigue, brain fog and poor memory to stress or ageing. Experts warn that common MTHFR gene variants could make the problem even worse.

London, UK - Ahead of Vitamin B12 Awareness Day on 23 September, a date acknowledged in the House of Commons record, Nature Provides has released new YouGov research that points to a simple story: risk is high, awareness is low, action is rare. Nearly one in three Brits may be at risk of vitamin B12 deficiency, yet most do not recognise the warning signs.

The nationally representative survey of 2,178 UK adults shows a clear gap between risk, awareness and behaviour:

Dietary risk: Around a third of Brits (26-30%) follow diets that may limit B12 intake, including vegan, vegetarian, pescatarian or reduced red meat.

Low action: Only 1 in 8 (12%) take a daily B12 supplement. Most never do.

Perception: Just 23% think they are personally at risk.

Confusion on symptoms:

55% link fatigue with B12 deficiency

36% brain fog

32% poor memory

Only 25% recognise pins and needles, a classic neurological sign

Nearly 1 in 10 wrongly pick constipation or itchy skin

Diet is only part of the picture. Even people who eat animal products can be low in B12 because of absorption issues, age-related changes or genetics. For many, a bioactive B12 supplement, a form the body can readily use, can help. For some, a liquid bioactive B12 can also be easier to take and absorb.

Expert comment

Rachel Aceso, Certified Nutritionist and CEO of Nature Provides, said:

"Vitamin B12 is essential for energy, cognition and nervous system health, yet it is often overlooked. The data shows many Brits are blaming tiredness, brain fog and poor memory on stress or ageing, when B12 deficiency could be the cause.

"What is not widely known is that even people who eat meat can be deficient because of absorption problems, age-related changes, or genetic factors. Up to half of Brits carry MTHFR gene variants that reduce how effectively they process vitamin B12. That is why choosing a bioactive B12 is so important. It gives the body what it can actually use, and the difference can be transformative."

Case study: Dr Simone Raenker

Dr Simone Raenker knows how easy it is to miss the signs. She ate well, slept well and walked daily, yet she still struggled with exhaustion, brain fog and low mood.

"I was doing everything right, eating healthily, sleeping well, walking daily, yet I felt constantly exhausted and foggy," she says. "I blamed myself, thinking I just could not cope with the demands of life. Doctors told me I was physically healthy, but I felt hopeless.

"When I switched to a bioactive B12 supplement, I noticed a dramatic improvement within days. It felt like someone had switched the lights back on. I had my energy, clarity and joy back again."

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