Long-term low B12 causes serious, potentially irreversible nerve and brain damage (peripheral neuropathy, memory loss, confusion, balance issues, psychosis, dementia), anemia (weakness, fatigue, pale skin), mood changes (depression, irritability), and can impact fertility or increase risks in pregnancy (neural tube defects). It affects red blood cell formation and nerve function, leading to a wide array of physical and mental health problems if left untreated.
Long-term vitamin B12 deficiency can cause nerve damage. This may be permanent if you do not start treatment promptly after your symptoms begin. If nerve damage is severe or long-lasting, some damage may be permanent. Vitamin B12 deficiency anemia most often responds well to treatment.
Intramuscular hydroxocobalamin and oral cyanocobalamin are treatment options for the management of clinically relevant vitamin B12 deficiency during pregnancy.
Taking doses of vitamin B-12 might cause: Headache. Nausea. Diarrhea.
The worst symptoms of B12 deficiency involve severe neurological damage, including severe memory loss, confusion, dementia, psychosis, hallucinations, balance problems, trouble walking, and irreversible nerve damage (neuropathy), alongside serious mental health issues like severe depression or irritability, with physical signs including extreme fatigue, pale skin, and a sore, smooth tongue. These severe cognitive and neurological issues are the most concerning because they can become permanent if left untreated.
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.
Symptoms include weak muscles, numbness, trouble walking, nausea, weight loss, irritability, fatigue, and increased heart rate.
In fact, some studies have even suggested the opposite. For instance, one study noted that individuals who regularly took vitamin B12 supplements gained between 2.5 to 17 fewer pounds (1.2 to 7.7 kg) over a decade than those who didn't supplement.
The foods highest in Vitamin B12 are animal products, with clams and liver (beef, lamb) being exceptionally rich sources, often providing several hundred percent of the daily value in a single serving, alongside seafood like mussels, sardines, and salmon, dairy, eggs, and fortified cereals and nutritional yeast for vegans.
If your deficit is mild, you may respond quickly to medication and eating more foods containing B12. If you have chronic low B12 levels or have underlying health conditions that cause the deficiency, you may need to take B12 for the rest of your life (or for as long as you have the underlying condition).
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.
If your vitamin B12 deficiency is not caused by a lack of vitamin B12 in your diet, you'll usually need to have an injection of hydroxocobalamin every 2 to 3 months for the rest of your life.
Vitamin B12 deficiency can sometimes lead to temporary infertility, an inability to conceive. This usually improves with appropriate vitamin B12 treatment.
Particularly, individuals with lung, stomach, colon, oesophageal, and pancreatic cancers are more prone to experiencing a deficiency in vitamin B12. This article will discuss different types of cancers causing vitamin B12 deficiency, associated symptoms, and available treatment options.
Disturbed or blurred vision can also occur as a result of a Vitamin B12 deficiency.
25 patients with vitamin B12 deficiency and cognitive complaint were analyzed, with a mean age of 68.5 years. 83% presented multidomain mild cognitive impairment being 60% with subcortical pattern. Memory and attention were the most affected domains in 80% of the sample, followed by executive functions with 52%.
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.
Before starting the Vitamin injections I will make sure to tell my Physician if I am pregnant, lactating or have any of the following conditions.
In conclusion, our results show that lower vitamin B12 was associated with insomnia symptoms and sleepiness in specific groups of participants. However, further research with objective measurements of sleep is crucial to assess the relationship between sleep and vitamin B12.
Strengthens Hair Follicles to Promote Growth
This vitamin supports the production of keratin, the protein that makes up hair strands, helping them grow thicker and more resilient. When your body lacks B12, hair follicles may become weaker, leading to slower growth and thinning hair.
For the patients with a very low serum B12 level (<100ng/l) and anaemia, macrocytosis or neurological symptoms, the treatment is simple: load the patient with vitamin B12 parenterally (by IM injection) and continue with maintenance vitamin B12 by IM injection every 3 months indefinitely (see below for more details).
B12 deficiency. Delay in diagnosis and treatment resulted in a near fatal presentation of a common disease. The primary care physician should be aware that there is a window of opportunity for diagnosis and treatment; several complications of Vit. B12 deficiency are irreversible if early treatment is not provided.
If you feel worse after your B12 injection, you're not alone, and it doesn't mean something is wrong with the treatment. In many cases, it's a temporary response as your body starts healing and adjusting to better nutrition. But it's important to listen to your body.