Vitamin B12 deficiency symptoms can occur when a person lacks the vitamin in their diet. There are a number of reasons why a person may not get enough B12 from the food they are eating. Two of the most popular are vegans or vegetarians with a specific disease. Vegans and vegetarians may be deficient in B12 because the best sources of vitamins come from food of animal origin. Certain disorders, such as pernicious anemia, can affect a person's B12 absorption.
Vitamin B12 plays an important role in the production of red blood cells and in the maintenance of nervous health.
If a person does not have B12, the blood is red The number of cells can be lower and their nerves can be damaged.
Complications that may result from these two events are the loss of physical coordination and cardiovascular disease.
To avoid the development of complications, it is important to recognize the symptoms of vitamin B1
A symptom noted by Harvard Health Publishing is a tingling sensation in the hands.
Tingling occurs as a result of damage to the nerves, and the tingling sensation may also appear as numbness or as a strange sensation.  Sometimes the tingling sensation can be a stabbing pain in the palm of one or both hands, says Thyroid Patient Advocacy.
It states, "This happens suddenly and for no apparent reason in the pot directly under the ring finger, approximately where the first fold of the hand is.
"If the B12 deficiency is not treated, it can come from the wrist to a tingling on the outer hand edge.
"This pain occurs when the wrist is bent backwards.
There may be tingling in the legs or feet next to the hands.
Other symptoms of vitamin B12 deficiency that you should be aware of
Bupa introduces other symptoms to the condition of being aware of:
- Feeling very tired
- Shortness of breath even after little exercise
- loss of appetite
- mouth and tongue pain
The health organization adds, "If you suffer from vitamin B12 deficiency anemia, you may also look pale or yellowish (have a yellow tinge on your face) Skin and the whites of your eyes).
"In addition to the symptoms of anemia, vitamin B12 deficiency can cause symptoms that are related to your nerves. This is called vitamin B12 neuropathy. This can affect your movement and sensation, especially in your legs, causing numbness or pinpricks, and reducing your sensitivity to touch, vibration, or pain. It can also lead to confusion, depression, difficulty concentrating and forgetfulness.
"These symptoms are not always due to a vitamin B12 deficiency anemia, but if you have them, consult your family doctor."
How to treat a vitamin B12 deficiency
If If a person does not get enough vitamin B12 from their diet, they may be advised by a general practitioner to eat more vitamin B12-enriched foods or take regular supplements.
Vitamin B12 injections may also be recommended Patients with pernicious anemia may require injections for the rest of their lives.
Experts say that adults ages 19 to 64 years need about 1.5 micrograms (mg) of vitamin B12 per day. If you do not have pernicious anemia, you should be able to do this through your diet.
Harvard Health Publishing, part of Harvard Medical School, offers the "List of B12 foods" on its website if the deficiency of vitamin B12 is triggered by inadequate intake of B12 foods.