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A 38-year-old male asked:

what are the symptoms of b12 deficiency?

2 doctor answers6 doctors weighed in
Dr. Ahmad Saab
Family Medicine 43 years experience
B12 Defficiency: In many cases B12 deficiency maybe as asymptomatic. B 12 deficiency can cause macrocytic anemia also known as pernicious anemia large red blood cells. Symptoms can include fatigue, lethargy, numbness in the extremities due to peripheral neuropathy. It can be treated with oral or sublingual tablets in mold cases or injections of b 12 Cyanocobalamin in more severe cases.
Dr. Martin Fried
General Practice 36 years experience
See below: Weakness and fatigue Light-headedness and dizziness Palpitations and rapid heartbeat Shortness of breath A sore tongue that has a red, beefy appearance Nausea or poor appetite Weight loss Diarrhea Yellowish tinge to the skin and eyes Numbness and tingling in the hands and feet dementia memory loss depression muscle weakness irritability

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Similar questions

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.
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.
A 45-year-old member asked:

What are signs and symptoms of B12 deficiency?

1 doctor answer1 doctor weighed in
Dr. David Chandler
Ophthalmology 33 years experience
B12 Deficiency: B12 deficiency can lead to anemia, with symptoms of fatigue, tiredness and exercise related shortness of breath. Neurological symptoms include numbness, parasthesias (tingling of hand and feet), decreased reflexes, ataxia (difficulty walking). Psychiatric symptoms include dementia, personality changes, psychosis, and impaired memory.
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.
A 19-year-old male asked:

How long do the cognitive and neurological symptoms of B12 deficiency take to heal after correction?

1 doctor answer2 doctors weighed in
Dr. Eric Weisman
Neurology 36 years experience
Depends on: Your age, how long you've had low B12 and how low it got. I usually try to keep the level above 450 for the first year and above 350 thereafter. In older people we tend to see incomplete recovery. Balance if impaired with eyes closed should start to improve with 6-9 months of therapy. Cognitive slowing can improve sooner. Some people report improved thinking within a week.

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Last updated Nov 17, 2017
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