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The Daily Insight

Do alcoholics have low b12

Author

Rachel Hickman

Published Mar 23, 2026

A: Yes. Research shows that even moderate alcohol consumption may decrease vitamin B12 levels, and alcoholics are thought to be at risk of vitamin B12 deficiency.

Why do alcoholics have B12 deficiency?

Possible explanations for this phenomenon may be the failure of the damaged liver to take up Cbl from the serum and/or a defective storage that causes vitamin B12 to leak out of the liver into circulation, where it predominantly binds to HC; on the other hand, a diminished concentration of TC II and a reduced clearance …

What vitamin deficiency do most alcoholics have?

Chronic alcoholic patients are frequently deficient in one or more vitamins. The deficiencies commonly involve folate, vitamin B6, thiamine, and vitamin A. Although inadequate dietary intake is a major cause of the vitamin deficiency, other possible mechanisms may also be involved.

What deficiencies do alcoholics have?

Alcoholics have been found to have deficiencies in calcium, magnesium, iron, and zinc. Research shows that drinking alcohol itself does not limit the absorption of minerals, but alcohol-related problems do.

Does alcohol destroy vitamin B12?

The presence of significant amounts of alcohol in your body can also directly destroy all members of the B vitamin family. In addition to B9 and B12, this family includes B1 (thiamin), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid) and B6 (pyridoxine).

What B vitamins does alcohol deplete?

Vitamins B-1, B-3 and B-6, or thiamine, niacin and pyridoxine, are directly or indirectly involved in alcohol metabolism, and they are among the first nutrients to be depleted by excessive alcohol consumption.

What are the neurological symptoms of B12 deficiency?

  • vision problems.
  • memory loss.
  • pins and needles (paraesthesia)
  • loss of physical co-ordination (ataxia), which can affect your whole body and cause difficulty speaking or walking.

How long does it take to recover from a B12 deficiency?

How Long Does It Take to Recover from B12 Deficiency? Once you begin treating your vitamin B12 deficiency, it can take up to six to 12 months to fully recover. It is also common to not experience any improvement during the first few months of treatment.

Why do alcoholics eat so little?

Alcoholics lose their appetite for food because alcohol temporarily suppresses their appetite, which makes them feel full. Despite bringing in empty calories in the body, alcohol still provides tons of calories that fill your stomach, making your brain believe that you’re not hungry.

What vitamins should you take if your an alcoholic?

Include 250mg Vitamin C, 150mg magnesium, 1500mg calcium and 500 mg niacin from dietary sources each day. A good multivitamin/mineral supplement (like Centrum) is also recommended.

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Is it okay to drink vitamins after drinking alcohol?

However, if you take supplements, it is important not to exceed recommended doses of these vitamins as high supplemental doses may lead to liver damage. Alcohol combined with high doses of these vitamins may theoretically lead to or worsen liver damage.

Do you need B12 to survive?

But it’s crucial for our survival — every single cell in our body requires B12 to function properly. We need it to make fatty acids, amino acids and to replicate and repair DNA.

Is vitamin B12 deficiency serious?

If left untreated, the symptoms of vitamin B12 deficiency tend to worsen and irreversible problems involving the nerves and brain may develop. The risk of experiencing a number of serious complications, including heart failure, may also increase.

Does lack of B12 cause weight gain?

Furthermore, while a deficiency in vitamin B12 may not cause weight gain, it can decrease energy levels and contribute to fatigue, making it harder to stay active and manage your weight.

Can B12 cause anxiety?

B12 Causes Psychiatric Symptoms: B12 deficiency can cause almost any psychiatric symptom, from anxiety, and panic to depression and hallucinations. This is because B12 deficiencies trigger symptoms in the nervous system and red blood cells.

Can you drink alcohol on B12 tablets?

No interactions were found between Alcohol (contained in alcoholic beverages) and Vitamin B12. This does not necessarily mean no interactions exist. Always consult your healthcare provider.

What is the average life expectancy of an alcoholic?

The conclusion of the study was that people who have to be hospitalized because of the negative health effects of their alcoholism typically have an average life expectancy of 47 to 53 years for men and 50 to 58 years for women.

What are the first signs of liver damage from alcohol?

Generally, symptoms of alcoholic liver disease include abdominal pain and tenderness, dry mouth and increased thirst, fatigue, jaundice (which is yellowing of the skin), loss of appetite, and nausea. Your skin may look abnormally dark or light. Your feet or hands may look red.

What happens when you drink alcohol everyday?

Daily alcohol use can cause fibrosis or scarring of the liver tissue. It can also cause alcoholic hepatitis, which is an inflammation of the liver. With long-term alcohol abuse, these conditions occur together and can eventually lead to liver failure.

What level is borderline B12 deficiency?

Patients with B12 levels between 200 and 300 pg/mL are considered borderline, and further enzymatic testing may be helpful in diagnosis. Patients with B12 levels below 200 pg/mL are considered deficient.

Can B12 deficiency make you feel unwell?

Nausea, vomiting, and diarrhea Vitamin B-12 deficiency can affect the digestive tract. A lack of red blood cells means that not enough oxygen reaches the gut. Insufficient oxygen here may lead to a person both feeling and being sick. It may also cause diarrhea.

Are symptoms of vitamin B12 deficiency reversible?

A. A deficiency of vitamin B12 can cause neurological and psychiatric problems that “can progress if left untreated, and can lead to irreversible damage,” said Dr. Donald Hensrud, director of the Mayo Clinic’s Healthy Living Program. Fortunately, it can be reversed fairly easily with vitamin pills or injections.

What is Wernicke syndrome in alcoholic?

Definition. Wernicke’s encephalopathy is a degenerative brain disorder caused by the lack of thiamine (vitamin B1). It may result from alcohol abuse, dietary deficiencies, prolonged vomiting, eating disorders, or the effects of chemotherapy. B1 deficiency causes damage to the brain’s thalamus and hypothalamus.

What medications should not be taken with B12?

Certain medications can decrease the absorption of vitamin B12, including: colchicine, metformin, extended-release potassium products, antibiotics (such as gentamicin, neomycin, tobramycin), anti-seizure medications (such as phenobarbital, phenytoin, primidone), medications to treat heartburn (such as H2 blockers …

Is it OK to take 1000 mcg of B12 a day?

The recommended dose for treating vitamin B12 deficiency is 1000 mcg daily. The recommended dose for preventing vitamin B12 deficiency is 1500 mg or 2500 mcg (sublingual tablets) daily. The dose for treating hyperhomocysteinemia is 400 mg daily in combination with folic acid.

How do you increase B12 absorption?

  1. Beef, liver, and chicken.
  2. Fish and shellfish such as trout, salmon, tuna fish, and clams.
  3. Fortified breakfast cereal.
  4. Low-fat milk, yogurt, and cheese.
  5. Eggs.

Can low B12 cause dizziness?

Frequent bouts about dizziness and vertigo can indicate B12 deficiency. You may experience a feeling of wobbles when you get up too fast from a sitting position. You may also feel dizzy when you walk up or downstairs, it could also be dangerous.

How soon do you feel less tired after a B12 injection?

Hydroxocobalamin gets to work straight away. However it may take a few days or weeks before your vitamin B12 levels and symptoms (such as extreme tiredness or lack of energy) start to improve.