Avoid Brain Atrophy with Vitamin B12

More than 40% of adults and elderly people are deficient in Vitamin B12.

B12 deficiency is strongly linked to brain atrophy, which means decreased brain mass and loss of neurological function.

Vegetarians are especially prone to B12 deficiencies(1). But even if you eat meat, your body can have a hard time to absorb Vitamin B12.

The most common reason for B12 deficiency is because of;

  • Low stomach acid
  • Acid-blocking drugs
  • Nicotine
  • Excess alcohol consumption
  • Stress

The Importance of Vitamin B12

It’s crucial for nerve health and production of red blood cells that carries oxygen through your body.

Elder people with low levels of Vitamin B12 are more likely to suffer from brain shrinkage. This worsens cognitive function and develops dementia.

Vitamin B12 deficiency also affects your energy levels and mood. It’s common for those who suffer from mania and bipolar disorder.

Deficiency happens over time, commonly as stomach acid levels decreases.

Choosing the Right Form of Vitamin B12

When you decide to buy Vitamin B12, be aware that there are different forms with different quality. Just like Magnesium.


This is the cheapest and lowest quality form. You’ll find it in most supplements.

The body can’t absorb cyanocobalamin directly, it has to convert and activate in order to be useful.

Cyanocobalamin is a synthetic chemical put in supplement just so they can label and say it contains Vitamin B12. Avoid this form.


This form is an “activated” form of vitamin B12 for immediate use. It’s absorbed more effectively and has no cyanide molecule.

This form is often recommended for chronic fatigue, but also for neurological aging.

Vitamin B12 Deficiency Symptoms

B12 helps with the formation of new cells in the body. Therefore, B12 deficiency can produce symptoms in any organ.

The symptoms often occur gradually over many years and can be hard to detect. But here are a few symptoms;

  • Anemia
  • Heavy drinking
  • Nausea
  • Lack of appetite
  • Weakness
  • Dizziness
  • Fatigue
  • Asthma
  • Depression
  • Constipation

Benefits of Vitamin B12

Besides preventing your brain from shrinking as you age, and develop dementia. Vitamin B12 improves;

  • Attention
  • Concentration
  • Memory
  • Fluid intelligence

Vitamin B12 also reduce levels of homocysteine, which is known for brain shrinkage and increased risk of heart disease.

Jarrow Formulas Methylcobalamin


Vitamin B12 is crucial for nerve health and production of red blood cells that carries oxygen through your body. Go with Methylcobalamin because it’s absorbed well. Deficiency is linked to brain atrophy.

Low Vitamin B12 Tied to Brain Atrophy, Cognitive Impairment [Medscape]

What Are the Causes of Brain Atrophy? [Livestrong]

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