Should I worry about B12 deficiency?

Yes, low vitamin B12 is bad and can be harmful, leading to fatigue, nerve damage (numbness, weakness, balance issues, memory loss), anemia, and mood changes, with severe, untreated cases causing permanent neurological problems like paralysis or severe cognitive decline. It's crucial to diagnose and treat it early, as some neurological damage can become irreversible.

Can vitamin B12 deficiency be serious?

Yes, vitamin B12 deficiency is serious and can be very harmful if left untreated, leading to severe nerve damage (neuropathy, memory loss, balance issues), psychiatric problems (depression, psychosis), anemia, heart complications, and developmental issues in babies, with some neurological damage potentially becoming permanent. Early diagnosis and treatment, often with B12 shots or high-dose pills, are crucial to prevent these severe, lasting effects.
 

How do you treat B12 deficiency in pregnancy?

Intramuscular hydroxocobalamin and oral cyanocobalamin are treatment options for the management of clinically relevant vitamin B12 deficiency during pregnancy.

Can B12 cause nausea?

Taking doses of vitamin B-12 might cause: Headache. Nausea. Diarrhea.

What do you crave when your B12 is low?

B12 deficiency can cause specific food cravings, particularly for meat, fish, or eggs, as your body seeks sources of the vitamin, and may also lead to sugar cravings due to its role in serotonin and energy regulation, but it can also manifest as pica (craving non-food items like ice or even bleach in severe cases). These cravings signal your body trying to correct a nutrient imbalance, but clinical testing is needed for a proper diagnosis, as emotional factors also drive cravings. 

Charlotte's Story: Untreated B12 Deficiency

How did my B12 get so low?

Some people can develop a vitamin B12 deficiency as a result of not getting enough vitamin B12 from their diet. A diet that includes meat, fish and dairy products usually provides enough vitamin B12, but people who do not regularly eat these foods can become deficient.

What is the #1 food highest in B12?

Organ meats and shellfish are the richest dietary sources, with a 3-ounce (85 g) serving of cooked clams providing approximately 84.1 µg, while beef liver contains about 70.7 µg. Fatty fish, such as trout and salmon, supply 5.4 µg and 4.8 µg per 3-ounce serving, respectively.

What are the facial signs of B12 deficiency?

Cutaneous manifestations associated with vitamin B12 deficiency are skin hyperpigmentation, vitiligo, angular stomatitis, and hair changes. A diagnosis of vitamin B12 deficiency is often overlooked in its early stages because these signs are not specific to vitamin B12 deficiency alone.

What deficiency causes you to feel off balance?

Feeling off-balance, dizzy, or unsteady (ataxia) can be caused by deficiencies in Vitamin B12, crucial for nerve function, and Vitamin D, important for nerve signals and muscle tone, with Iron deficiency (anemia) also a common culprit due to poor oxygen supply to the brain, alongside potential roles for magnesium. These deficiencies affect your nervous system, proprioception (body awareness), and circulation, leading to balance issues, numbness, fatigue, and cognitive problems. 

Can low B12 cause birth defects?

Infants born to vitamin B-12-deficient women may be at increased risk of neural tube closure defects, and maternal vitamin B-12 insufficiency (<200 pmol/L) can impair infant growth, psychomotor function, and brain development, which may be irreversible. However, the underlying causal mechanisms are unknown.

How long do B12 injections last?

B12 injection duration varies, but effects often last 1-2 weeks for initial treatment, potentially extending to monthly or even 2-3 months for maintenance, depending on your deficiency level, absorption, lifestyle, and the B12 form used (like hydroxocobalamin lasts longer). Initially, you might get weekly shots to build stores, then transition to less frequent shots as levels stabilize, with the liver storing significant amounts for later use. 

Which trimester is B12 most important?

Two other studies found that low maternal vitamin B12 levels during the third trimester were associated with lower cognition [28,29] and social development [29] in offspring at two years of age.

When should I be worried about B12?

Vitamin B12 deficiency can also cause symptoms that affect your brain and nervous system (neurological symptoms), including: numbness. muscle weakness. psychological problems, which can range from mild depression or anxiety, to confusion and dementia.

What cancers are associated with low B12?

Cancers affecting the gastrointestinal tract (stomach, colon, pancreas, esophagus) and blood cancers (leukemia, lymphoma) are commonly linked to B12 deficiency, primarily by disrupting absorption or production; tumors can block nutrient uptake, damage stomach lining (reducing intrinsic factor), or impair bone marrow function, making B12 deficiency a potential sign of underlying malignancy, though it has other causes too.
 

What happens if you ignore B12 deficiency?

If left untreated, a Vitamin B12 deficiency can cause severe, potentially irreversible damage to your nervous system and brain, leading to issues like memory loss, difficulty walking or speaking, paralysis, depression, and anemia, plus serious pregnancy complications and increased cancer risk. While early symptoms are treatable, prolonged deficiency can result in permanent nerve damage and cognitive impairment, affecting coordination, vision, and mental health. 

What are the warning signs of vitamin B12 deficiency?

Warning signs of Vitamin B12 deficiency include extreme fatigue, weakness, pale or yellowish skin, neurological issues like pins and needles or numbness, mood changes (depression, irritability), cognitive problems (brain fog, memory loss), a sore red tongue (glossitis), mouth ulcers, and shortness of breath, often due to megaloblastic anemia. These symptoms develop slowly, so prompt medical attention with a blood test is crucial for diagnosis and to prevent irreversible nerve damage. 

When should I be worried about being off balance?

You should worry about balance problems and seek prompt medical care if dizziness is sudden, severe, persistent, or accompanied by signs of a stroke (sudden weakness, numbness, vision/speech changes, severe headache), severe pain, fainting, seizures, or trouble breathing, as these could signal a serious underlying issue like a stroke or heart problem. See a doctor for recurring unsteadiness, vertigo (spinning), falls, disorientation, or balance issues affecting daily life, even without emergency signs, to identify causes like inner ear problems, neurological conditions, or medication side effects. 

What level of B12 is dangerously low?

A dangerously low B12 level is generally considered below 200 pg/mL, often leading to symptoms like fatigue, nerve issues (numbness, tingling), anemia, and cognitive problems, with levels under 100 pg/mL in older adults signaling a more severe deficiency, though even borderline levels (200-300 pg/mL) warrant further testing, especially with symptoms, using markers like methylmalonic acid (MMA) for accuracy.
 

What are the mental symptoms of B12 deficiency?

Vitamin B12 deficiency can cause significant mental and psychiatric issues, including depression, anxiety, irritability, confusion, memory loss, and difficulty concentrating, ranging from mild to severe. More serious symptoms can involve psychosis, hallucinations, delusions, delirium, apathy, and even dementia-like states, affecting mood, cognition, and perception. These neuropsychiatric symptoms can sometimes appear before or without typical physical signs like anemia. 

What is a Stage 4 B12 deficiency?

Stage 4 B12 deficiency is the severe, clinical stage, marked by significant neurological issues like nerve damage (spinal cord degeneration, numbness, paralysis risk), cognitive decline (memory loss, confusion), and severe anemia (megaloblastic anaemia), leading to fatigue, depression, and balance problems, requiring urgent treatment with B12 injections to prevent permanent damage, as symptoms overlap with other neurological conditions.
 

Does thyroid affect B12?

Numerous studies have found an association between vitamin deficiency and thyroid disorders (TD). The presence of anti-parietal cell antibodies is indicative of reduced ability to absorb vitamin B12.

Who is most at risk for B12 deficiency?

The following groups are among those most likely to be vitamin B12 deficient.

• Older adults. ...
• People with pernicious anemia. ...
• People with gastrointestinal disorders. ...
• People who have had gastrointestinal surgery. ...
• People who follow vegetarians diets. ...
• Infants of women who follow vegan diets. ...
• Gastric acid inhibitors. ...
• Metformin.