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A 44-year-old member asked:

what does b12 deficiency cause?

2 doctor answers3 doctors weighed in
Dr. Shaym Puppala
Internal Medicine 25 years experience
Anemia: The most common complication of B12 deficiency is anemia. Pernicious anemia, which is an autoimmune process that can cause profound B12 deficiency, is associated also with neurologic symptoms such as weakness/numbness/tingling, memory problems, personality changes. The tongue can become shiny and sore. Symptoms respond to vitamin B12 supplementation, frequently injections if pernicious anemia.
Dr. Bernard Seif
Clinical Psychology 40 years experience
B12: Makes red blood cells to carry oxygen in body. Lowb12 can lead to anemia, your body does not have enough red blood cells. This can make you weak ; tired. Low B12 can cause damage to your nerves and can impact memory and thinking.

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A 28-year-old member asked:

B12 deficiency cause pts become aggrasive?

2 doctor answers3 doctors weighed in
Dr. Visala Nanduri
Specializes in Internal Medicine
May be: Vit B12 plays important role in normal functioning of brain and nervous system. Deficiency is known to cause cognitive impairment and behavior disturbances in elderly.
Portland, OR
A 40-year-old female asked:

I just found out I have B12 deficiency. My B12 level was 169. Can someone tell me exactly what this means and what else it can cause. ?

2 doctor answers2 doctors weighed in
Dr. Seema Patel
Holistic Medicine 27 years experience
Anemia: Low B12 can come from chronic low dietary intake (vegetarian diet) , pernicious anemia , other GI problems that results in malabsorption, hematologist problems you need to have further evaluation for this but need regular B12 injections frequently to improve the levels. They should check other vitamin levels to make sure they are fine as well.
Hobbs, NM
A 28-year-old female asked:

Recurrent hypokalemia despite not on any meds to cause it. Low vit d and b12, why? I'm only 28 to have all these deficiencies.

1 doctor answer1 doctor weighed in
Dr. Alok Agrawal
Nephrology and Dialysis 34 years experience
See below: The only common link i can think of is some problem of malabsorption in gut which can cause all these three problems. Your doctor needs to work it up.
A female asked:

What would cause vit B12 and D deficiency if you have a diet high in both and live on a tropical island where you work outside?

1 doctor answer1 doctor weighed in
Dr. Mohammad Khan
Pediatrics 30 years experience
Absorption: will happen if your body can not absorb these vitamins or have some metabolic or hormonal problem. Please consult your physician
Fort Worth, TX
A female asked:

Can a B12 deficiency cause loss of smell and taste?

1 doctor answer1 doctor weighed in
Dr. Ed Friedlander
Pathology 44 years experience
Doubtful: Your question is very concerning. You're a diabetic, you state you are sad, and you're just reported loss of smell and taste. These need to be worked up. Is it you antidepressant medication? This is infamous. Do you have nasal polyps? Easy to fix. If you are also B12 deficient, this is extremely serious and needs to be worked up and addressed. But it's probably not the cause.

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