Low serum levels of vitamin B 12 during pregnancy have been linked to an increased risk for neural tube defects (NTDs)
Nausea, vomiting, diarrhea, and constipation are common, especially in the early weeks of treatment
Symptoms of deficiency can vary from person to person, but may include impaired brain function, tiredness and lack of energy, breathlessness and fatigue, headaches, pale skin, heart palpitations, loss of appetite and weight loss, anxiety and depression
The vitamin may also be linked to physical benefits, including: [1] Bone strength Skin health Reduced risk of congenital disabilities [8] You can remedy low vitamin B12 levels with an oral supplement or vitamin B12 shots
Nutr Rev
Injections typically offer higher bioavailability since they bypass the digestive process