[2] Heffernan, M., Summers, R
A deficiency in vitamin B12 can cause fatigue, headaches, indigestion, problems with your vision, increased risk of obesity, and cognitive difficulties
However, Vitamin B12 in general helps maintain good health and has been shown to be beneficial in helpng to also: reduce stress, increase energy, improve memory, mood and cardiovascular health, and to promote weight loss
These include how the patient is doing, any health problems, and the testing method
Also, advise of any health or medication changes
A doctor may inject vitamin B12 shots into a persons muscle every other day for around 2 weeks