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Vitamin B12 is an important nutrient that helps the body make red blood cells and DNA. It is naturally found in meat, eggs, poultry, and dairy products. A B12 deficiency can cause a wide range of symptoms, including physical, neurological, and psychological issues. Some of the most common symptoms are fatigue, weakness, nausea, vomiting, diarrhoea, weight loss, and a sore mouth or tongue. B12 deficiency can also lead to muscle cramps and muscle weakness. This is because a lack of B12 negatively impacts motor and sensory nerve function, which can cause muscle aches and cramps.
| Characteristics | Values |
|---|---|
| Muscle Aches | Muscle weakness, muscle cramps, joint pain |
| Cause of Muscle Aches | Nerve damage, nerve function impairment |
| Other Physical Symptoms | Fatigue, weight loss, loss of appetite, nausea, vomiting, diarrhea, constipation, lightheadedness, dizziness, yellowish skin, sores in mouth, swollen tongue, ulcers in mouth |
| Neurological Symptoms | Numbness, tingling in hands and feet, vision problems, memory loss, confusion, difficulty walking, speaking, and breathing |
| Psychological Symptoms | Depression, psychosis, mood disorders, mania, suicidal thoughts, paranoia, delusions, loss of taste and smell |
| Risk Factors | Vegetarian or vegan diet, weight loss surgery, aging, certain medications, alcoholism, tapeworm infection, medical conditions affecting digestion, genetic factors |
| Treatment | Vitamin B12 oral medication, intramuscular injections, nasal gel, or spray |
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What You'll Learn
B12 deficiency causes nerve damage
B12 deficiency can cause nerve damage, which may be permanent if left untreated. This is because B12 is a vital coenzyme in the synthesis of neurotransmitters and myelin, which is required for neuronal protection and normal transmission of nerve impulses. A deficiency can lead to cognitive disturbances and damage to the neurons, as well as neuropsychiatric disorders. Peripheral neuropathy is the most common presentation of nerve damage caused by B12 deficiency, and it may present as pain, numbness, tingling, loss of sensation, decreased motor activity, or decreased muscle mass.
B12 deficiency can also cause muscle aches and muscle weakness. This is because B12 deficiency negatively impacts motor and sensory nerve function. It can also cause impaired coordination, known as ataxia, which is a neurological symptom.
The human body needs vitamin B12 to make red blood cells, nerves, DNA, and carry out other functions. B12 is not produced by the body and must be obtained from food or supplements. Meat, eggs, poultry, and dairy products are common sources of B12. Vegans and vegetarians are at a high risk of developing a B12 deficiency if they do not consume fortified grains or take supplements.
Some people may be at a higher risk of B12 deficiency due to weight-loss surgery or certain health conditions. Weight-loss surgeries, such as gastric bypass, can interfere with the body's ability to absorb B12. Conditions such as Crohn's disease or celiac disease can also impact the body's ability to absorb B12. Additionally, commonly prescribed heartburn drugs that reduce acid production in the stomach can contribute to B12 deficiency, as acid is needed for B12 absorption.
It is important to pay attention to any symptoms of B12 deficiency and consult a doctor if necessary. Early diagnosis and treatment of nerve damage caused by B12 deficiency can lead to a full or partial recovery and limit further damage.
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Vegetarian diets and weight-loss surgery can cause low B12
B12 is an essential nutrient that is not made by the human body and must be obtained from food or supplements. A deficiency in vitamin B12 can cause muscle cramps and weakness, as well as fatigue, impaired coordination, headaches, gastrointestinal issues, and nerve damage.
Vegetarians and vegans are at a high risk of developing a vitamin B12 deficiency because vitamin B12 is only found naturally in animal products like meat, eggs, poultry, and dairy. Therefore, those who follow a plant-based diet must ensure they are consuming enough grains fortified with vitamin B12 or take a vitamin supplement.
Pregnant and lactating women adhering to an unsupplemented vegan diet are at an even higher risk of vitamin B12 deficiency, and their offspring are at an elevated risk of low birth weight and preterm births. The British Dietetic Association advises that those following a vegan diet should consume B12-fortified foods and take GMP-certified vitamin B12 supplements.
Weight-loss surgery, such as gastric bypass, can also cause vitamin B12 deficiency because the body's ability to extract vitamin B12 from food is interfered with. After gastric bypass surgery, food bypasses parts of the stomach and small intestine where vitamin B12 is usually broken down into a usable form. As a result, doctors often monitor patients' B12 levels and suggest supplements or shots if necessary.
In summary, vegetarians and vegans who do not consume enough B12-fortified foods or take supplements, as well as individuals who have undergone weight-loss surgery, are at an increased risk of developing a vitamin B12 deficiency, which can lead to muscle aches and a variety of other health issues.
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Low B12 can lead to anaemia
B12 is an important nutrient that helps the body make red blood cells and DNA, the genetic material in all cells. The average adult should get 2.4 micrograms of B12 per day. B12 cannot be produced by the body and must be obtained from food or supplements. Meat, eggs, poultry, and dairy products are common sources of B12. Vegans and vegetarians who do not eat animal products are at a higher risk of developing a B12 deficiency if they do not consume enough fortified foods or take supplements.
The symptoms of pernicious anaemia include muscle weakness, numbness or tingling in the hands and feet, memory loss, and dementia. It can also cause heart palpitations, fatigue, and shortness of breath. If left untreated, pernicious anaemia can cause irreversible damage to the nervous system.
Vitamin B12 deficiency can be treated with B12 medications, such as oral medication, intramuscular injections, nasal gel, or nasal spray. The treatment for B12 deficiency depends on the underlying cause and may be required for a short or long period.
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B12 deficiency causes fatigue
B12 deficiency can cause fatigue. Vitamin B12 is an important nutrient that helps the body make red blood cells and DNA, the genetic material in all cells. The average adult should get 2.4 micrograms per day. B12 deficiency can lead to megaloblastic anaemia, which results in large, abnormal, and immature red blood cells and impaired DNA synthesis. This can make your skin pale and cause jaundice, making your skin and the whites of your eyes take on a yellowish colour.
B12 is not produced by the body and must be obtained from food or supplements. A B12 deficiency can be caused by a vegan or vegetarian diet, weight-loss surgery, or problems with absorption due to age or other medical conditions. Strict vegetarians and vegans are at high risk of developing a B12 deficiency if they do not consume grains fortified with the vitamin or take supplements. Weight-loss surgery can interfere with the body's ability to extract B12 from food. Conditions that interfere with nutrient absorption, such as celiac or Crohn's disease, can also cause B12 deficiency. Certain medications, including metformin, proton pump inhibitors, histamine H2 blockers, and oral birth control pills, can also lead to low B12 levels.
The symptoms of B12 deficiency are varied and can develop slowly, becoming worse over time. In addition to fatigue, neurological symptoms can include numbness or tingling in the hands and feet, vision problems, memory issues, and difficulty walking or speaking. Psychological symptoms can include depression, psychosis, mood disorders, and mania. Physical symptoms can include nausea, vomiting, diarrhoea, weight loss, a sore mouth or tongue, and muscle weakness.
B12 deficiency can be treated with B12 medications, including oral medication, intramuscular injections, nasal gel, and nasal spray. The prognosis depends on how early the deficiency is diagnosed and treated.
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B12 is required for red blood cell production
Vitamin B12, also known as cobalamin, is naturally found in animal-based foods such as meat, poultry, shellfish, eggs, dairy products, and fortified breakfast cereals. It can also be obtained through supplements. However, some individuals may be at a higher risk of developing a B12 deficiency due to dietary choices, absorption issues, or certain health conditions. For example, strict vegetarians and vegans who do not consume animal products or fortified grains are at a higher risk of B12 deficiency.
Additionally, weight-loss surgeries, ageing, and conditions like pernicious anemia, Crohn's disease, and celiac disease can interfere with the body's ability to absorb vitamin B12 effectively. Inadequate B12 levels can negatively impact nerve function, leading to muscle cramps and weakness. It can also cause a range of other symptoms, including fatigue, constipation, diarrhoea, nausea, and impaired coordination.
It is important to recognise that while B12 is crucial for red blood cell production, it also plays a significant role in other bodily functions. B12 is necessary for DNA synthesis, and its deficiency can lead to impaired DNA production and cell death. Furthermore, B12 is involved in the breakdown of homocysteine, an amino acid associated with an increased risk of heart disease and stroke when present in elevated levels.
Maintaining adequate levels of vitamin B12 is essential for overall health and the proper functioning of the body's systems. A well-balanced diet that includes B12-rich foods or supplements can help prevent B12 deficiency and its associated complications. However, it is always advisable to consult a healthcare professional for personalised advice and to determine the appropriate course of action for addressing any potential B12 deficiency.
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Frequently asked questions
Vitamin B12 is an important nutrient that helps the body make red blood cells, nerves, and DNA. It is naturally found in meat, eggs, poultry, and dairy products.
The symptoms of vitamin B12 deficiency include muscle cramps, muscle weakness, fatigue, nausea, vomiting, diarrhea, loss of appetite, weight loss, numbness, and joint pain.
Vitamin B12 deficiency can be caused by a vegan or vegetarian diet, weight-loss surgery, or certain medications. It can also be caused by conditions that interfere with nutrient absorption, such as celiac disease or Crohn's disease.
Low vitamin B12 can be treated with vitamin B12 medications, such as oral medication, intramuscular injections, nasal gel, or a nasal spray.
