A deficiency of vitamin B12 often occurs when dietary intake is insufficient or when the body has issues with absorbing vitamin B12
How its done A short needle is inserted so that it pierces the skin into fatty tissue, but does not reach the muscle
For patients seeking weight loss who request B12 injections, GPs should: Assess for genuine deficiency through appropriate blood tests rather than empirical treatment Provide education about the lack of evidence supporting B12 for weight loss in non-deficient individuals Explore underlying concerns about weight and energy levels, addressing these through appropriate channels Signpost to evidence-based resources such as NHS weight management services according to local pathways Patients should contact their GP if they experience unexplained fatigue, neurological symptoms (numbness, tingling, balance problems), or signs of anaemia (pallor, breathlessness, palpitations), as these may indicate B12 deficiency requiring investigation
Common anemia categories include: Iron deficiency anemia Thalassemia (D56 codes) Sickle cell disorders (D57 codes) Anemia of chronic disease (often linked to CKD, cancer, or autoimmune conditions) Hemolytic anemia (where red blood cells are destroyed faster than theyre produced) Aplastic anemia (bone marrow failure) Vitamin B12 deficiency anemia Folate deficiency anemia Blood loss anemia Different sources group anemia types differently, so the 7 types of anemia phrasing seen in search results is an oversimplification
These usually contain hydroxocobalamin or cyanocobalamin
