15 Symptoms of B12 Deficiency

When doctors cannot trace muscle fatigue to a specific issue such as an over-the-top workout or a recent illness, they may look into a vitamin B12 deficiency. B12 is needed to maintain the myelin that insulates your nerves, and health services classify muscle weakness as a neurological effect of deficiency rather than one caused by anemia.

One of the first signs of a vitamin B12 deficiency is frequent mental and physical fatigue, even after a full night's sleep. If someone consistently gets eight hours of rest but still struggles to stay awake during the day, a lack of B12 could be the cause. A deficiency leaves the body unable to produce enough fully functioning red blood cells, so less oxygen reaches your tissues, which leads to ongoing tiredness.

Everyone tends to be a little forgetful at times. However, when this becomes the norm, it may be time to see a doctor for blood tests, which could reveal a B12 deficiency. This one is neurological rather than a matter of oxygen: B12 is essential to the nervous system, and health services list memory and concentration problems among the effects of a deficiency.

Another early warning sign of a vitamin B12 deficiency is a feeling of electrical charges through the body. Many individuals describe a pins and needles sensation similar to the prickly feeling that comes from sitting on one foot or lying on one arm for too long. This is nerve damage rather than poor circulation. A deficiency erodes the myelin insulating peripheral nerves, and the misfiring that follows registers as tingling or numbness.

Ashen skin on a person who has been receiving sufficient sunlight can indicate a vitamin B12 deficiency. With fewer healthy red blood cells in circulation, the blood carries less oxygen, and the rosy glow generally associated with good health fades. Individuals may also experience yellow or jaundiced skin coloring; this occurs if red blood cells become fragile, breaking apart quite easily. This breakdown releases bilirubin, the cause of jaundice.

Feeling dizzy for no reason can be an early warning sign of a vitamin B12 deficiency. Most people notice this symptom especially when they stand or sit too quickly, or when walking up a flight of stairs, and it usually comes on and passes quickly. Dizziness is often attributed to other factors, especially in the elderly, and B12 deficiencies are often overlooked.

Vitamin B12 is crucial for overall mental health. Some people with insufficient B12 experience anxiety and depression, with varying intensity. When such symptoms, which many people feel from time to time, do not ebb when the issue in question passes or is resolved, the feelings could indicate a vitamin deficiency or any number of other health concerns.

All healthy people have little bumps across the surface of their tongues called papillae. Some patients experiencing vitamin B12 deficiency may notice these bumps appear to vanish when the tongue becomes inflamed, a condition called glossitis. Some may also experience soreness along the back side of the tongue or a burning sensation.

Sometimes patients with a vitamin B12 deficiency may also experience vision problems including fuzzy spots, blurry vision, peripheral shadows, and double vision. While these issues are symptomatic of many conditions, they can also result from insufficient vitamin B12. Although rare, optic neuropathy is a serious complication of a B12 deficiency where the optic nerve is progressively damaged, sometimes resulting in central vision loss.

Weight loss can result from vitamin B12 deficiencies. The changes to the tongue that cause the papillae to "disappear" directly affects the taste buds, which are contained within. As a result, an individual may eat less and subsequently lose weight.

When vitamin B12 levels are insufficient, it can lead to nerve damage which can cause problems with balance and coordination. This is particularly noticeable in older individuals, but it can affect people of all ages. If you find yourself stumbling or tripping more frequently without an obvious cause, it might be time to consider a B12 deficiency as the underlying issue.

Ringing or buzzing in the ears when there's no external sound source isn't a headline symptom of B12 deficiency, but it does appear in clinical guidance among the effects of anemia. While tinnitus can be caused by various factors, including B12 deficiency, it's often overlooked as a potential symptom. If you're experiencing persistent tinnitus, especially in conjunction with other signs on this list, consult a healthcare professional.

Irregular heartbeats or palpitations can be another indicator of vitamin B12 deficiency. These palpitations can be unsettling and may be accompanied by a feeling that your heart is racing and lightheadedness. If you're experiencing heart palpitations, it's essential to rule out nutritional deficiencies, such as low iron, as a potential cause. Both low iron and a B12 deficiency can interfere with the body's ability to produce healthy red blood cells causing anemia and leading to heart palpitations.

Vitamin B12 is essential for the production of healthy red blood cells. When B12 levels are low, it can lead to a reduction in the number of red blood cells and cause anemia. Anemia, in turn, can result in shortness of breath, even with minimal physical activity. It is red blood cells that carry oxygen throughout your body. If you find yourself unusually breathless during everyday tasks, consider a B12 deficiency as a potential reason.

A deficiency in vitamin B12 can affect your olfactory function. That is you may notice changes in how foods taste or things smell. Some individuals report a metallic taste in their mouths, while others have experienced a diminished sense of smell. These alterations can impact your appetite and overall enjoyment of food. This again is an indirect symptom related to neurological issues caused by a vitamin B12 deficiency and is often overlooked.