Energy is associated with the feelings of mental wellbeing, stamina and vitality. B-vitamins are essential for managing energy-generating metabolism and need to be replenished daily. Deficiencies in B vitamins, often caused by poor diets and high alcohol consumption, have been linked to lethargy, depression, and physical fatigue. A review on B vitamins (B1, B2, B3, B5, B6, B8, B9 and B12) connected them with cognitive and psychological symptoms and manifestations of fatigue when these micronutrients are deficient. Read study