What does low B12 feel like?

B12 deficiency feels like pervasive fatigue, weakness, and tingling/numbness (pins and needles) in your hands and feet, due to its role in nerve and red blood cell production, but can also manifest as mood changes (depression, irritability), memory/confusion, pale skin, a sore tongue, balance issues, vision problems, and digestive upset like diarrhea or constipation, sometimes progressing to severe neurological damage if untreated.

How do you feel if your B12 is low?

B12 deficiency feels like pervasive fatigue, weakness, and tingling/numbness (pins and needles) in your hands and feet, due to its role in nerve and red blood cell production, but can also manifest as mood changes (depression, irritability), memory/confusion, pale skin, a sore tongue, balance issues, vision problems, and digestive upset like diarrhea or constipation, sometimes progressing to severe neurological damage if untreated.
 

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. 

How much B12 per day for a pregnant woman?

Pregnant women need 2.6 micrograms (mcg) of Vitamin B12 daily, a slight increase from the non-pregnant requirement, essential for fetal development and to prevent neural tube defects, often met through fortified foods, animal products, or prenatal supplements. The recommended intake rises to 2.8 mcg for breastfeeding mothers to support milk production. 

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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.

What food is highest in B12?

The foods highest in Vitamin B12 are organ meats (like liver and kidney) and shellfish (especially clams), offering thousands of percent of the daily value in small servings, with fortified cereals, dairy, fish (salmon, tuna, sardines), and eggs also being excellent sources. For vegans, fortified foods like nutritional yeast and plant milks are key, as B12 is naturally found in animal products.
 

Which fruit is B12 rich?

Apples and bananas help improve gut health, supporting better B12 absorption. Some fortified fruit juices (like orange juice) may include added B12.

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.

Does low B12 affect sleep?

Yes, low vitamin B12 levels can significantly affect sleep, often leading to insomnia, fatigue, disrupted sleep cycles, and waking up unrefreshed, as B12 helps regulate melatonin, circadian rhythms, and brain function, though research is complex, with some studies showing low B12 links to poor sleep and others finding high doses might cause sleeplessness. 

Can low B12 make you feel sick?

Vitamin B12 deficiency can cause physical, neurological and psychological symptoms. Physical symptoms can include: Feeling very tired or weak. Experiencing nausea, vomiting or diarrhea.

What does B12 acne look like?

B12 acne typically looks like painful, red, pus-filled pimples (papules and pustules) and deeper, hard lumps (cysts/nodules), often appearing suddenly on the face (especially forehead, chin, jawline), neck, chest, and back, without the typical blackheads (comedones) of regular acne, especially after starting high-dose B12 supplements. It's an inflammatory reaction, marked by sudden onset and tenderness, differentiating it from common acne.
 

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. 

What does B12 fatigue feel like?

B12 fatigue feels like extreme, persistent tiredness and weakness, a lack of energy even after rest, and "brain fog," often accompanied by shortness of breath, pale skin, pins and needles, and a sore tongue, because your body can't produce enough healthy red blood cells to carry oxygen. It's a drained feeling where simple tasks are hard, and it can also impact mood and memory.
 

What are the two main causes of B12 deficiency?

The following can cause low levels of vitamin B-12:

• Pernicious anemia. With this condition, the body's immune system attacks cells in the stomach that make a substance called intrinsic factor. ...
• Gastric surgeries. ...
• Intestinal conditions. ...
• Diet.

Can low B12 make your feet hurt?

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.

What are the first signs of low B12?

Early B12 deficiency signs often include fatigue, weakness, pale or yellowish skin, shortness of breath, headaches, and a sore, smooth tongue, but can also manifest as neurological issues like tingling (pins and needles) and memory problems, alongside mood changes (depression, irritability). Because symptoms develop slowly and mimic other conditions, prompt medical evaluation with a blood test is crucial for proper diagnosis and to prevent potentially irreversible nerve damage, notes the NHS, the Cleveland Clinic, and WebMD. 

What does B12 numbness feel like?

Nerve Tingling or Numbness

Without B12, myelin deteriorates, leading to nerve damage. You might experience a sensation of “pins and needles” or feel as though certain body parts are falling asleep frequently, indicating that your nervous system may be struggling.

Can low B12 cause ear pain?

[5,6] In addition, low levels of Vitamin B12 and folate are associated with the destruction of the microvasculature of the stria vascularis, which might result in decreased endocochlear potential and in hearing loss and tinnitus.

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.

Which nuts contain B12?

While nuts offer great nutrients, they aren't a primary source of Vitamin B12, which is mainly in animal products; however, some sources list Almonds, Cashews, Pistachios, Walnuts, Pecans, and Hazelnuts as containing some B12, often alongside dried fruits like dates and raisins, but it's best to get B12 from fortified foods or animal sources if you're deficient.