can impair the ability to run, walk, or even move normally. In severe cases, the feet and limbs can become numb, weak, and unable to bear weight. Reflexes may also be affected. To prevent these problems, it is important to consume foods rich in vitamin B12, such as beef liver, chicken, fish, and eggs, and to take a vitamin B12 supplement if necessary.
Headaches
Frequent headaches can be a sign of vitamin B12 deficiency. This deficiency can cause various neurological side effects, with headaches being one of the most common.