Although you sleep enough, you feel tired and exhausted all the time. The brain seems foggy. Concentration and thinking are difficult. - This puzzling low level of performance, also known as fatigue, places a considerable burden on those affected and poses a major challenge for physicians. The causes are manifold and often not easy to clarify (1). However, in the case of corresponding symptoms, a possible vitamin B12 deficiency should always be considered. An undersupply of the power vitamin can also lead to fatigue symptoms, which can be remedied in these cases.
It feels as if the battery is constantly empty. This is how those affected describe their chronic exhaustion, which robs them of momentum in everyday life and can significantly impair their enjoyment of life. The search for the causes and ways out of the energy low is often arduous. Fatigue often occurs in connection with chronic diseases, but it can also be triggered by psychological stress, accidents or infections (1,2). Fatigue is also one of the post-covoid symptoms and has thus received a great deal of public attention.