Top 11 Vitamin B12 Deficiency Symptoms You Should Not Ignore!

by DailyHealthPost Editorial

9. Irritability

Being deficient in vitamin B12 can affect a person’s mood, potentially causing irritability or depression.

10. Nausea, vomiting, and diarrhea

Vitamin B12 deficiency may lead to a person both feeling and being sick, and cause diarrhea, as a result of insufficient oxygen.

11. Decreased appetite and weight loss

As a result of digestive issues, such as nausea, people with vitamin B12 deficiency may lose their appetite, leading to weight loss.


Are you experiencing any of these symptoms? A severe deficiency in Vitamin B12 can cause permanent damage to the brain and nervous system.

What causes vitamin B12 deficiency?

Vegans can develop vitamin B12 deficiency because they lack this nutrient in their diets.

Alcohol consumption, even on a moderate level, can cause B12 deficiency. Drinking alcohol flushes B vitamins from your body, and decreases absorption from your gut.

B12 deficiency is also common in people over the age of 50. As you age, it becomes increasingly difficult for your body to absorb vitamin B12 from foods, because your stomach produces less stomach acid, which is vital for nutrient absorption.

Also, you may not be able to process vitamins properly if you suffer from digestive problems, such as Crohn’s disease or Celiac’s disease. In addition, prescription medication can also interfere with the body’s ability to absorb B12.