Vitamin B12 absorption can fail due to lack of stomach acid or intrinsic factor, digestive diseases (celiac, Crohn's), stomach/intestine surgery, aging, certain medications (like metformin, acid reducers), autoimmune conditions (pernicious anemia), alcoholism, or a vegan diet, all preventing B12 from being released from food, binding to intrinsic factor, or being absorbed in the small intestine.
Pernicious anaemia causes your immune system to attack the cells in your stomach that produce the intrinsic factor, which means your body is unable to absorb vitamin B12.
If your B12 deficiency is because of your diet, you can start eating more meat, fish, and dairy products. If you don't eat animal products, you can change your diet to include vitamin B12-fortified breads and cereals or B12 supplements. Taking certain medicines can interfere with how your body absorbs vitamin B12.
The main causes of B12 malabsorption include inherited disorders (Intrinsic factor deficiency, Imerslund-Gräsbeck disease, Addison's pernicious anemia, obesity, bariatric surgery and gastrectomies.
Vitamin B12 or folate deficiency anaemia can cause a wide range of symptoms. These usually develop gradually, but can worsen if the condition goes untreated.
Pernicious anemia is a relatively rare autoimmune disorder that causes diminishment in dietary vitamin B12 absorption, resulting in B12 deficiency and subsequent megaloblastic anemia. It affects people of all ages worldwide, particularly those over 60.
B12 deficiency can trigger specific food cravings, most notably for meat, fish, or eggs, as the body seeks animal-based sources to replenish the vitamin, especially in those on vegetarian/vegan diets or older adults. While cravings for sugary or salty foods can also signal general B-vitamin issues, the distinct urge for protein-rich animal products is a key indicator, but professional testing is crucial for confirmation.
Severe vitamin B deficiency can cause diseases such as beriberi or pellagra. People who are vitamin B deficient may feel tired, numbness or weakness, among other symptoms.
What is vitamin B12 deficiency anemia? Vitamin B12 deficiency anemia is a condition in which your body does not have enough healthy red blood cells, due to a lack (deficiency) of vitamin B12. This vitamin is needed to make red blood cells, which carry oxygen to all parts of your body.
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.
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.
Metformin is considered a first-line treatment for adult-onset (Type II) diabetes. However, metformin can cause malabsorption of Vitamin B-12. This is thought to be due to a decrease in bile acid secretion resulting in bacterial overgrowth that causes decreased intestinal absorption.
Peripheral neuropathy is the most common presentation of vitamin B12 deficiency. Depending upon the type of nerve involved, it may present as pain, numbness, tingling, loss of sensation, decreased motor activity, or decreased muscle mass.
The time it takes to recover from Vitamin B12 Deficiency depends on several factors, including: Severity of Deficiency: Mild deficiencies often resolve quicker, while severe cases can take months. Duration of Deficiency: Chronic deficiencies may require more extended treatment to replenish depleted stores.
Tuna is an excellent source of vitamin B12, an essential vitamin needed to make DNA. Vitamin B12 also helps you to form new red blood cells and prevent the development of anemia.
Vitamin B12 is present in foods of animal origin, including fish, meat, poultry, eggs, and dairy products [5,12]. Plant foods do not naturally contain vitamin B12. However, fortified breakfast cereals and fortified nutritional yeasts are readily available sources of vitamin B12 that have high bioavailability [13,14].
Milk. One of the best drinks with B12 is milk. One cup of whole milk contains approximately 1.32µg of vitamin B12.
You might want to investigate a B12 deficiency if you are experiencing foot pain or lower limb pain. Vitamin B12 is an essential nutrient, primarily found in animal products, that plays a key role in maintaining nerve function, producing red blood cells, and synthesizing DNA.
Symptoms of vitamin B12 or folate deficiency
Vitamin B12deficiency symptoms may include:
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.
B12 (Cobalamin)
What it does: B12 is necessary for cell reproduction and can be applied topically for skin benefits because it reduces inflammation, dryness, and acne. It is sometimes used to treat conditions like psoriasis and eczema.