Vitamin B12 is present in many dietary sources, such as: meat fish eggs dairy products nutritional yeast some fortified foods Vitamin B12 shots are a form of supplementation that contains a synthetic version of vitamin B12, or cyanocobalamin
Common Causes of B12 Deficiency Not getting enough B12 can happen for several reasons
Vitamin B12 injections can be particularly beneficial for several groups of individuals who may have difficulty obtaining adequate levels of this essential nutrient through diet alone
Many people suffer from low B12 levels due to stress, diet, or absorption issues, which can lead to fatigue, mood swings, weight gain, or even depression
These microbiome changes reversed rapidly, however, when the obese mice were returned to a normal, lean diet 79