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How to Know If You Have a Vitamin B12 Deficiency—and What to Do About It

5 min read
A hand holding a box labeled 'VITAMIN B12' with green text, surrounded by scattered green and white capsules and a stethoscope in the background.
Vitamin B12 Deficiency breakdown

Vitamin B12 may not always get the spotlight like vitamin C or D, but it plays an essential role in keeping our bodies running smoothly. From neurological function to red blood cell production, a deficiency, known as Vitamin B12 Deficiency, in this crucial vitamin can lead to long-term health problems if not addressed quickly. This…

Vitamin B12 may not always get the spotlight like vitamin C or D, but it plays an essential role in keeping our bodies running smoothly. From neurological function to red blood cell production, a deficiency, known as Vitamin B12 Deficiency, in this crucial vitamin can lead to long-term health problems if not addressed quickly. This article dives into the signs, causes, and actionable solutions for B12 deficiency—tailored for a modern UAE lifestyle.

Graphic illustrating the functions of vitamin B12, featuring three circular sections: one with a yellow brain icon labeled
Vitamin B12 Functions and Food Sources

What Is Vitamin B12 and Why It Matters

Vitamin B12 (cobalamin) is a water-soluble vitamin vital for three primary functions:

  • Red blood cell formation
  • DNA synthesis
  • Neurological function

It is naturally found in animal-based foods, which means those following plant-based diets are more susceptible to deficiency. B12 deficiency can cause a condition known as megaloblastic anaemia, where the body produces unusually large and dysfunctional red blood cells. But more critically, long-term deficiencies can impact cognitive performance, mood stability, and nerve health.

An array of foods rich in Vitamin B12, including salmon fillets, broccoli, carrots, oranges, eggs, and assorted nuts, with a chalkboard labeled 'Vitamin B12' in the center, set against a white wooden background.
Vitamin B12: A Vital Nutrient for Your Health

Who Is at Risk of B12 Deficiency in the UAE?

Several demographics are particularly vulnerable:

  • Vegetarians and Vegans: Without animal products, dietary B12 becomes nearly impossible to obtain naturally.
  • Older Individuals: Ageing reduces the stomach’s ability to absorb B12.
  • People with Digestive Disorders: Conditions like Crohn’s disease or celiac disease can impede absorption.
  • Long-term Medication Users: Proton pump inhibitors and metformin have been linked to lower B12 absorption.
  • Heavy Alcohol Consumers: Alcohol impairs nutrient absorption and damages gut health.

According to Sophie Trotman, a registered nutritionist, “Long-term use of certain medications, such as proton pump inhibitors or metformin, and excessive alcohol intake can also lead to B12 deficiency.”

A grid illustrating various sources of vitamin B12, featuring icons of fish, soy beans, fortified cereals, shellfish, eggs, red meat, poultry, liver, crustaceans, silken tofu, low fat dairy, and cheese.
Where to get natural Vitamin B12

Recognising the Symptoms: Are You B12 Deficient?

A Vitamin B12 deficiency doesn’t usually develop overnight. It can creep in over time, with symptoms often mistaken for other health issues. Common signs include:

  • Chronic fatigue or weakness
  • Numbness or tingling in hands and feet
  • Difficulty walking or maintaining balance
  • Memory loss or cognitive decline
  • Pale or jaundiced skin
  • Mood changes such as depression or irritability

Dr Lapa, a UAE-based nutritional health consultant, adds: “In extreme cases, B12 deficiency can lead to severe and potentially irreversible symptoms including nerve damage and significant cognitive decline.”

A variety of protein-rich foods including raw salmon, shrimp, chicken, pork, and beef on wooden boards, two cups of milk, and three eggs, all set on a wooden surface.
B12 is sourced naturally

The Science: How Does B12 Deficiency Happen?

Vitamin B12 from food is bound to protein and must be released through stomach acid. It’s then absorbed in the small intestine with the help of intrinsic factor, a glycoprotein. If any part of this chain breaks, such as low stomach acid or damaged intestinal lining, deficiency may follow.

This makes it especially important in the UAE, where high-stress lifestyles and gastric issues are common. Overuse of acid-reducing medications, prevalent among expats and locals alike, also plays a contributing role.

Illustration depicting the effects of Vitamin B12 deficiency, with labeled sections for DNA synthesis, nerve myelination, and fatty acid oxidation, accompanied by cartoon-style graphics representing each function.
Vitamin B12 deficiency

Can You Get Enough B12 From Diet Alone?

Yes—and no. If you consume a diet rich in animal products, you’re likely safe. Foods high in B12 include:

  • Organ meats (especially liver)
  • Shellfish such as clams and crabs
  • Fatty fish like salmon and tuna
  • Eggs
  • Dairy: milk, yoghurt, and cheese

For vegetarians and vegans, fortified foods become essential:

  • Plant-based milks enriched with B12
  • Fortified cereals
  • Nutritional yeast

However, Trotman notes, “It’s challenging to obtain sufficient B12 from plant-based sources alone,” suggesting supplementation for those following a strict vegan or vegetarian diet.

Infographic illustrating symptoms and causes of Vitamin B12 deficiency, with icons representing symptoms like heart palpitations, pale skin, shortness of breath, weakness, nausea, muscle weakness, and irritability, and causes including pernicious anemia, bowel problems, vegetarian diet, medications, and toxins.
Symptoms and causes vitamin b12 deficiency

Supplementation: When Food Isn’t Enough

If you’re showing symptoms or fall into an at-risk group, supplementation may be necessary. Options include:

  • Oral Supplements: Cyanocobalamin and methylcobalamin are common forms. Methylcobalamin is more bioavailable but pricier.
  • Sublingual Tablets: Absorbed under the tongue, bypassing the digestive tract.
  • Nasal Sprays: Quick and convenient, especially for those with absorption issues.
  • Injections: Administered intramuscularly, these are used in severe cases for rapid correction.

Wedgwood, a clinical nutritionist, explains: “B12 shots bypass the digestive process entirely, allowing for more immediate absorption. Many patients feel a boost in energy and mental clarity within a week or two.”

Shot of a man looking stressed while sitting on the sofa at home

How to Get Tested in the UAE

Blood tests for B12 levels are widely available in the UAE through private clinics and hospitals. If you experience symptoms or fall into a high-risk category, request a blood test that measures:

  • Serum B12
  • Methylmalonic acid (MMA)
  • Homocysteine levels

These biomarkers offer a fuller picture of your B12 status. Testing is quick and affordable, and often covered by health insurance.

Three bottles of NOW B-12 supplements, each containing 1,000 mcg, labeled for Nervous System Health and Energy Production, featuring a floral design and indicating that they are vegetarian/vegan with 100 lozenges per bottle.
Vitamin B 12 Vegan Supplement

The Risks of Ignoring a Deficiency

Left unchecked, a deficiency in Vitamin B12 can lead to:

  • Irreversible nerve damage
  • Severe anaemia
  • Cognitive impairment
  • Mood disorders, including depression and paranoia
  • Heart issues due to elevated homocysteine levels

As Dr Lapa puts it, “If left untreated, these symptoms can result in permanent nerve damage and substantial impairment in daily functioning.”

An assortment of fresh ingredients for cooking, including raw salmon fillets garnished with parsley, shrimp, cherry tomatoes, yellow bell pepper, olive oil, and fresh herbs like cilantro and basil, alongside bowls of almonds, cashews, chickpeas, black olives, and green olives, all arranged on a wooden cutting board.
Sources of B12

Prevention: A UAE Lifestyle Guide

To maintain healthy B12 levels, consider the following steps:

  • Eat B12-rich meals regularly
  • Monitor alcohol consumption
  • Avoid unnecessary use of antacids
  • Consider annual blood tests, especially if you’re vegan or over 50
  • Use supplements if advised by your doctor

In a fast-paced country like the UAE, where brunches, travel, and high-pressure jobs are common, burnout symptoms might be masking something more serious, like a B12 deficiency.

A young woman resting on a couch, leaning back with her eyes closed and one hand on her forehead, displaying a contemplative or stressed expression; a plant and decorative items are visible in the blurred background.
Symptoms and causes of a Vitamin B12 deficiency

Final Thought

Vitamin B12 may be the unsung hero in your nutritional line-up, but it’s one you can’t afford to ignore. Whether you’re a wellness aficionado or just trying to stay energised through the working week, keeping your B12 in check is a smart move. With simple dietary adjustments, routine tests, or strategic supplementation, staying on top of this essential nutrient is easier than ever.

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