Apr 1, 2025

10 silent threats of Vitamin B12 deficiency

TOI Lifestyle Desk

Shocking signs of Vitamin B12 that people mostly ignore

Vitamin B12, or cobalamin is a water-soluble vitamin of immense importance to the body. It is very important for producing energy within the body. However, there are many aspects of this nutrient that not discussed and are also much-underrated.

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Numbness and tingling

B12 is essential for nerve health. Low levels can damage the nerves, causing a tingling or "pins and needles" sensation in the hands and feet. This may progress into severe nerve dysfunction if left untreated.

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Memory Loss and brain fog

Struggling with focus, forgetfulness, or mental confusion? Low B12 levels can slow cognitive function, increasing the risk of brain fog, memory loss, and even dementia in severe cases.

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Heart palpitations

B12 is vital for red blood cell production. Low levels can lead to anemia, causing an irregular heartbeat, breathlessness, dizziness, or even heart palpitations due to reduced oxygen flow.

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Fatigue and weakness

Feeling tired all the time? A B12 deficiency reduces red blood cell production, limiting oxygen supply to your body. This leads to persistent fatigue, muscle weakness, and low energy, even with proper rest.

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Pale or jaundiced skin

A lack of B12 can cause anemia, making your skin appear pale or yellowish. Without enough healthy red blood cells, oxygen delivery is compromised, leading to dull and lifeless skin.

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Mood Swings and depression

B12 plays a role in serotonin production, a neurotransmitter that regulates mood. Deficiency may trigger mood swings, irritability, anxiety, and an increased risk of depression.

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Glossitis and Mouth ulcers

A swollen, inflamed tongue (glossitis) and painful mouth ulcers can be early signs of B12 deficiency. These symptoms make eating and speaking uncomfortable, affecting daily life.

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Balance and coordination issues

As B12 deficiency worsens, nerve damage can impair movement. You may experience difficulty walking, frequent falls, or poor balance—symptoms often mistaken for aging-related decline.

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Who’s at risk and prevention

Vegetarians, vegans, older adults, and individuals with digestive disorders are at higher risk of B12 deficiency. Regular intake through food or supplements ensures optimal levels. Consult a doctor for proper diagnosis and supplementation.

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Food that is rich in Vitamin B12

Vitamin B12 is found in animal-based foods like meat, poultry, fish, eggs, and dairy products. Examples include beef liver, salmon, trout, and fortified cereals. Dairy items like milk, yogurt, and cheese, along with eggs, also provide significant amounts of B12.

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Thanks For Reading!

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