Headaches

B12 deficiency and insufficiency can cause neurological symptoms such as headaches. Headaches are one of the most common symptoms of B12 deficiency in both adults and children.

According to some research, those who suffer from certain types of headaches often are more likely to have low B12 levels. In a 2019 study of 140 people, half of whom had migraines, researchers discovered that blood levels of B12 were considerably lower in migraine patients than in non-migraine patients. In addition, those with the greatest B12 levels were 80% less likely to suffer from migraines than those with the lowest B12 levels, according to the study. Therefore, treatment with B12 may relieve migraine headache symptoms in some people.