Vitamin B12, also known as cobalamin, causes symptoms such as anemia, weakness, constipation and lack of appetite when it is lacking in the body.
This vitamin can be easily found in foods such as fish, meats, eggs, cheese and milk, and is important for stimulating the production of blood cells, DNA and for maintaining the health of your nervous system. See the complete list of foods that are rich in vitamin B12 here.
So, when vitamin B12 it is lacking in the body, there can appear symptoms such as:
- Fatigue and frequent weakness;
- Loss of appetite;
- Weight loss without an apparent cause;
- Tingling sensation in the hands and feet;
- Loss of balance;
- Mental confusion and memory loss;
- Frequent mouth and tongue wounds;
- Recurrent feelings of sadness.
In children, the deficiency of this vitamin can also cause problems with their growth. It may cause delayed overall development and megaloblastic anemia, for example.
Who is most at risk of vitamin B12 deficiency
Vitamin B12 deficiency occurs mainly in people who follow a vegetarian diet without consuming cow's milk and dairy products, the elderly and in cases of gastrointestinal surgeries, Crohn's disease, celiac disease and pernicious anemia.
In addition, the use of medications such as antibiotics, metformin, and remedies for gastritis and gastric ulcers, such as Omeprazole, may decrease the absorption of B12 in the gut, and so it is recommended that you talk to your doctor about the need to use vitamin supplements.
When can this vitamin be excessive
The excess of this vitamin is rare, because it is easily eliminated from the body through the urine. However, the use of B12 supplements in cases of polycythemia, Leber's Congenital Amaurosis, cobalt or cobalamin allergy, or after stenting surgery on some blood vessel in the body should be avoided.