An Overview of Vitamin Deficiency
you’ve got the option to develop a deficiency due to low vitamin intake or certain medical conditions. They’re usually treated with vitamin supplements in either oral (by mouth) or injected forms. While they can vary between deficiencies, many of them overlap. Aleksandr Zubkov / Getty Images Usually, noticeable effects don’t begin to develop until you’ve had low levels for several months. Some research suggests that vitamin D deficiency is linked to fatigue and that takingvitamin D supplementscan improve this symptom....