thalassemia risk and prenatal testing Are Vitamin B12 Shots Right for You? Thalassemia: High Yield Notes Inherited microcytic anemia ( globin chain production) severity varies from trait (mild) to major (severe) Key Concept Microcytosis from reduced hemoglobin synthesis Trait often mild asymptomatic; Two cases of vitamin B12 deficiency in patients with beta thalassemia trait: lessons in diagnosis Bulletin of the National Research Centre Springer Nature Link B12 Thalassemia: The Amazing Benefit For Energy Liv Hospital